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introduction
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NO is involved in signaling pathways that are related to fundamental processes in plant biology such as growth and development (Beligni and Lamattina, >>2000<<; Pagnussat et al., 2002), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., 2011; Siddiqui et al., 2011) or biotic stress (Delledonne et al., 1998; Durner et al., 1998; Feechan et al., 2005).
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NO is involved in signaling pathways that are related to fundamental processes in plant biology such as growth and development (Beligni and Lamattina, 2000; Pagnussat et al., >>2002<<), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., 2011; Siddiqui et al., 2011) or biotic stress (Delledonne et al., 1998; Durner et al., 1998; Feechan et al., 2005).
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NO is involved in signaling pathways that are related to fundamental processes in plant biology such as growth and development (Beligni and Lamattina, 2000; Pagnussat et al., 2002), senescence (Begara-Morales et al., >>2013<<) and response to abiotic (Corpas et al., 2011; Siddiqui et al., 2011) or biotic stress (Delledonne et al., 1998; Durner et al., 1998; Feechan et al., 2005).
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pathways that are related to fundamental processes in plant biology such as growth and development (Beligni and Lamattina, 2000; Pagnussat et al., 2002), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., >>2011<<; Siddiqui et al., 2011) or biotic stress (Delledonne et al., 1998; Durner et al., 1998; Feechan et al., 2005).
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to fundamental processes in plant biology such as growth and development (Beligni and Lamattina, 2000; Pagnussat et al., 2002), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., 2011; Siddiqui et al., >>2011<<) or biotic stress (Delledonne et al., 1998; Durner et al., 1998; Feechan et al., 2005).
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such as growth and development (Beligni and Lamattina, 2000; Pagnussat et al., 2002), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., 2011; Siddiqui et al., 2011) or biotic stress (Delledonne et al., >>1998<<; Durner et al., 1998; Feechan et al., 2005).
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development (Beligni and Lamattina, 2000; Pagnussat et al., 2002), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., 2011; Siddiqui et al., 2011) or biotic stress (Delledonne et al., 1998; Durner et al., >>1998<<; Feechan et al., 2005).
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Lamattina, 2000; Pagnussat et al., 2002), senescence (Begara-Morales et al., 2013) and response to abiotic (Corpas et al., 2011; Siddiqui et al., 2011) or biotic stress (Delledonne et al., 1998; Durner et al., 1998; Feechan et al., >>2005<<). Generally, the rise in NO levels in response to stress conditions is accompanied by another group of molecules called reactive oxygen species (ROS), some of which, particularly H2O2, are also involved in multiple signaling pathways
n2:mentions
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rise in NO levels in response to stress conditions is accompanied by another group of molecules called reactive oxygen species (ROS), some of which, particularly H2O2, are also involved in multiple signaling pathways (Neill et al., >>2002<<). This mini-review will explore recent findings concerning the modulation of the main antioxidant enzymes by NO, especially the enzymatic components of Asa-GSH cycle, with particular attention to the molecular mechanism underpinning this
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nitric oxide-mediated post-translational modifications: nitration and s-nitrosylation
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Nitric oxide mainly transmits its action via post-translational modifications, such as S-nitrosylation and tyrosine nitration, which can regulate the function of the target proteins (Astier and Lindermayr, >>2012<<). These NO-PTMs may be involved in cell signaling under physiological and stress conditions (Corpas et al., 2015).
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nitration, which is mediated mainly by peroxynitrite (ONOO-), consists of the addition of NO2 radicals to one of the two equivalent ortho-carbons of the aromatic ring of tyrosine residues leading to 3-nitrotyrosine (Gow et al., >>2004<<; Radi, 2004).
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which is mediated mainly by peroxynitrite (ONOO-), consists of the addition of NO2 radicals to one of the two equivalent ortho-carbons of the aromatic ring of tyrosine residues leading to 3-nitrotyrosine (Gow et al., 2004; Radi, >>2004<<). This modification converts the tyrosine into a negatively charged residue and causes a marked shift in the hydroxyl group’s pKa (Turko and Murad, 2002; Abello et al., 2009) which can affect the target proteins resulting in a gain, loss
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This modification converts the tyrosine into a negatively charged residue and causes a marked shift in the hydroxyl group’s pKa (Turko and Murad, >>2002<<; Abello et al., 2009) which can affect the target proteins resulting in a gain, loss or no change in the protein’s function (Souza et al., 2008; Radi, 2013).
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This modification converts the tyrosine into a negatively charged residue and causes a marked shift in the hydroxyl group’s pKa (Turko and Murad, 2002; Abello et al., >>2009<<) which can affect the target proteins resulting in a gain, loss or no change in the protein’s function (Souza et al., 2008; Radi, 2013).
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charged residue and causes a marked shift in the hydroxyl group’s pKa (Turko and Murad, 2002; Abello et al., 2009) which can affect the target proteins resulting in a gain, loss or no change in the protein’s function (Souza et al., >>2008<<; Radi, 2013).
n2:mentions
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and causes a marked shift in the hydroxyl group’s pKa (Turko and Murad, 2002; Abello et al., 2009) which can affect the target proteins resulting in a gain, loss or no change in the protein’s function (Souza et al., 2008; Radi, >>2013<<). Although tyrosine nitration has been traditionally considered as an irreversible mechanism and a nitrosative stress marker, the existence of tyrosine denitrase activity that reduces 3-nitrotyrosine in mammalian cells (Görg et al., 2007;
n2:mentions
n3:23157446
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Although tyrosine nitration has been traditionally considered as an irreversible mechanism and a nitrosative stress marker, the existence of tyrosine denitrase activity that reduces 3-nitrotyrosine in mammalian cells (Görg et al., >>2007<<; Deeb et al., 2013) pointing toward a role of tyrosine nitration in NO-mediated signaling processes in these cells.
n2:mentions
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nitration has been traditionally considered as an irreversible mechanism and a nitrosative stress marker, the existence of tyrosine denitrase activity that reduces 3-nitrotyrosine in mammalian cells (Görg et al., 2007; Deeb et al., >>2013<<) pointing toward a role of tyrosine nitration in NO-mediated signaling processes in these cells.
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S-nitrosylation consists of the addition of a NO group to a cysteine thiol leading to S-nitrosothiols (SNOs) and consequently can also alter the function of a broad variety of proteins (Hess et al., >>2005<<; Astier et al., 2011). S-nitrosoglutathione (GSNO), formed by S-nitrosylation of the antioxidant GSH, is the major low-molecular-weight S-nitrosothiol.
n2:mentions
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It is considered to be a NO reservoir in cells (Gaston et al., >>1993<<; Durner et al., 1999; Leitner et al., 2009) that due to its phloem mobility is involved in signaling mechanisms.
n2:mentions
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It is considered to be a NO reservoir in cells (Gaston et al., 1993; Durner et al., >>1999<<; Leitner et al., 2009) that due to its phloem mobility is involved in signaling mechanisms.
n2:mentions
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It is considered to be a NO reservoir in cells (Gaston et al., 1993; Durner et al., 1999; Leitner et al., >>2009<<) that due to its phloem mobility is involved in signaling mechanisms.
n2:mentions
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Furthermore, GSNO can mediate transnitrosylation reactions in which a new S-nitrosothiol is generated by transferring its NO group to a new cysteine thiol group (Hess et al., >>2005<<).
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S-nitrosylation is a reversible mechanism since SNO can be specifically and enzymatically broken down by thioredoxins (Benhar et al., >>2008<<; Kneeshaw et al., 2014), in addition to the non-enzymatic decomposition by antioxidants such as ascorbate or glutathione.
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S-nitrosylation is a reversible mechanism since SNO can be specifically and enzymatically broken down by thioredoxins (Benhar et al., 2008; Kneeshaw et al., >>2014<<), in addition to the non-enzymatic decomposition by antioxidants such as ascorbate or glutathione.
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Furthermore, S-nitrosoglutathione reductase (GSNOR) decomposes GSNO and indirectly controls SNO levels (Liu et al., >>2001<<; Feechan et al., 2005).
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Furthermore, S-nitrosoglutathione reductase (GSNOR) decomposes GSNO and indirectly controls SNO levels (Liu et al., 2001; Feechan et al., >>2005<<).
n2:mentions
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In recent years, mounting evidence has shown that SNOs are fundamental players in NO-signaling pathways in plant biology (Belenghi et al., >>2007<<; Romero-Puertas et al., 2007, 2008; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007;
n2:mentions
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In recent years, mounting evidence has shown that SNOs are fundamental players in NO-signaling pathways in plant biology (Belenghi et al., 2007; Romero-Puertas et al., >>2007<<, 2008; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et
n2:mentions
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In recent years, mounting evidence has shown that SNOs are fundamental players in NO-signaling pathways in plant biology (Belenghi et al., 2007; Romero-Puertas et al., 2007, >>2008<<; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al.,
n2:mentions
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In recent years, mounting evidence has shown that SNOs are fundamental players in NO-signaling pathways in plant biology (Belenghi et al., 2007; Romero-Puertas et al., 2007, 2008; Lindermayr and Durner, >>2009<<; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a,
n2:mentions
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years, mounting evidence has shown that SNOs are fundamental players in NO-signaling pathways in plant biology (Belenghi et al., 2007; Romero-Puertas et al., 2007, 2008; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., >>2015<<), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
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biology (Belenghi et al., 2007; Romero-Puertas et al., 2007, 2008; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., >>2005<<; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
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2007; Romero-Puertas et al., 2007, 2008; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., >>2007<<; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
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et al., 2007, 2008; Lindermayr and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., >>2007<<; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
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and Durner, 2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., >>2008<<; Chaki et al., 2009a, 2011a,b).
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2009; Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
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n2:Context
rdf:value
Astier et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b). Due to its importance, increased efforts have been made to identify the processes that could be regulated by SNOs and subsequently hundreds of proteins that undergo S-nitrosylation under physiological or adverse conditions have been
n2:mentions
n3:21172815
Subject Item
_:vb49145010
rdf:type
n2:Context
rdf:value
et al., 2011; Hu et al., 2015), with an important role in plant immunity and plant response to abiotic stresses (Feechan et al., 2005; Rusterucci et al., 2007; Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b). Due to its importance, increased efforts have been made to identify the processes that could be regulated by SNOs and subsequently hundreds of proteins that undergo S-nitrosylation under physiological or adverse conditions have been
n2:mentions
n3:21676000
Subject Item
_:vb49145011
rdf:type
n7:Section
dc:title
s-nitrosylation controls onoo- levels via regulation of prxii e
n7:contains
_:vb49145016 _:vb49145017 _:vb49145018 _:vb49145019 _:vb49145020 _:vb49145021 _:vb49145022 _:vb49145023 _:vb49145012 _:vb49145013 _:vb49145014 _:vb49145015 _:vb49145024 _:vb49145025 _:vb49145026 _:vb49145027
Subject Item
_:vb49145012
rdf:type
n2:Context
rdf:value
Peroxiredoxins (Prx) are thiol based peroxidases that can be involved in multiple functions in addition to its role in detoxifying H2O2 (for review see Bhatt and Tripathi, >>2011<<). Some Prxs have been identified to be regulated by NO-PTMs in animals and plants.
n2:mentions
n3:21777667
Subject Item
_:vb49145013
rdf:type
n2:Context
rdf:value
In mammals, S-nitrosylation inhibits the enzymatic activity of neuronal Prx2 (Fang et al., >>2007<<) and Prx1 (Engelman et al., 2013) whereas the peroxidase activity of Prx2 from mammalian erythrocytes was induced after tyrosine nitration (Randall et al., 2014).
n2:mentions
n3:18003920
Subject Item
_:vb49145014
rdf:type
n2:Context
rdf:value
In mammals, S-nitrosylation inhibits the enzymatic activity of neuronal Prx2 (Fang et al., 2007) and Prx1 (Engelman et al., >>2013<<) whereas the peroxidase activity of Prx2 from mammalian erythrocytes was induced after tyrosine nitration (Randall et al., 2014).
n2:mentions
n3:23479738
Subject Item
_:vb49145015
rdf:type
n2:Context
rdf:value
inhibits the enzymatic activity of neuronal Prx2 (Fang et al., 2007) and Prx1 (Engelman et al., 2013) whereas the peroxidase activity of Prx2 from mammalian erythrocytes was induced after tyrosine nitration (Randall et al., >>2014<<). In plants, S-nitrosylation inhibits the peroxidase activity of PrxII E (Romero-Puertas et al., 2007) and PrxII F (Camejo et al., 2015).
n2:mentions
n3:24719319
Subject Item
_:vb49145016
rdf:type
n2:Context
rdf:value
In plants, S-nitrosylation inhibits the peroxidase activity of PrxII E (Romero-Puertas et al., >>2007<<) and PrxII F (Camejo et al., 2015).
n2:mentions
n3:18165327
Subject Item
_:vb49145017
rdf:type
n2:Context
rdf:value
In plants, S-nitrosylation inhibits the peroxidase activity of PrxII E (Romero-Puertas et al., 2007) and PrxII F (Camejo et al., >>2015<<). Interestingly, some members of Prx family posses ONOO- reductase activity (Bryk et al., 2000; Romero-Puertas et al., 2007; Pedrajas et al., 2010) and therefore could protect against ONOO--mediated oxidative and nitrosative stresses. In
n2:mentions
n3:25682994
Subject Item
_:vb49145018
rdf:type
n2:Context
rdf:value
Interestingly, some members of Prx family posses ONOO- reductase activity (Bryk et al., >>2000<<; Romero-Puertas et al., 2007; Pedrajas et al., 2010) and therefore could protect against ONOO--mediated oxidative and nitrosative stresses.
n2:mentions
n3:11001062
Subject Item
_:vb49145019
rdf:type
n2:Context
rdf:value
Interestingly, some members of Prx family posses ONOO- reductase activity (Bryk et al., 2000; Romero-Puertas et al., >>2007<<; Pedrajas et al., 2010) and therefore could protect against ONOO--mediated oxidative and nitrosative stresses.
n2:mentions
n3:18165327
Subject Item
_:vb49145020
rdf:type
n2:Context
rdf:value
Interestingly, some members of Prx family posses ONOO- reductase activity (Bryk et al., 2000; Romero-Puertas et al., 2007; Pedrajas et al., >>2010<<) and therefore could protect against ONOO--mediated oxidative and nitrosative stresses.
n2:mentions
n3:20547232
Subject Item
_:vb49145021
rdf:type
n2:Context
rdf:value
In plants, PrxII E is S-nitrosylated during hypersensitive response (Romero-Puertas et al., >>2008<<) and this modification inhibits its peroxynitrite reductase activity promoting tyrosine nitration (Romero-Puertas et al., 2007).
n2:mentions
n3:18297659
Subject Item
_:vb49145022
rdf:type
n2:Context
rdf:value
In plants, PrxII E is S-nitrosylated during hypersensitive response (Romero-Puertas et al., 2008) and this modification inhibits its peroxynitrite reductase activity promoting tyrosine nitration (Romero-Puertas et al., >>2007<<). Therefore, S-nitrosylation emerges as a key mechanism in ONOO- homeostasis, regulating endogenous level of ONOO- and tyrosine nitration via control of PrxII E (Romero-Puertas et al., 2007). Changes in ONOO- levels and/or tyrosine
n2:mentions
n3:18165327
Subject Item
_:vb49145023
rdf:type
n2:Context
rdf:value
Therefore, S-nitrosylation emerges as a key mechanism in ONOO- homeostasis, regulating endogenous level of ONOO- and tyrosine nitration via control of PrxII E (Romero-Puertas et al., >>2007<<). Changes in ONOO- levels and/or tyrosine nitration have been related to several abiotic/biotic stresses (Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b). Consequently, understanding if S-nitrosylation of PrxII
n2:mentions
n3:18165327
Subject Item
_:vb49145024
rdf:type
n2:Context
rdf:value
Changes in ONOO- levels and/or tyrosine nitration have been related to several abiotic/biotic stresses (Valderrama et al., >>2007<<; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
n2:mentions
n3:17240373
Subject Item
_:vb49145025
rdf:type
n2:Context
rdf:value
Changes in ONOO- levels and/or tyrosine nitration have been related to several abiotic/biotic stresses (Valderrama et al., 2007; Corpas et al., >>2008<<; Chaki et al., 2009a, 2011a,b).
n2:mentions
n3:18801763
Subject Item
_:vb49145026
rdf:type
n2:Context
rdf:value
Changes in ONOO- levels and/or tyrosine nitration have been related to several abiotic/biotic stresses (Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b).
n2:mentions
n3:19112080
Subject Item
_:vb49145027
rdf:type
n2:Context
rdf:value
Changes in ONOO- levels and/or tyrosine nitration have been related to several abiotic/biotic stresses (Valderrama et al., 2007; Corpas et al., 2008; Chaki et al., 2009a, 2011a,b). Consequently, understanding if S-nitrosylation of PrxII E could be involved in plant response to these stress conditions is a good issue to be addressed in the future.
n2:mentions
n3:21676000 n3:21172815
Subject Item
_:vb49145028
rdf:type
n7:Section
dc:title
nitric oxide interactions with catalase and superoxide dismutases
n7:contains
_:vb49145040 _:vb49145029 _:vb49145030 _:vb49145031 _:vb49145036 _:vb49145037 _:vb49145038 _:vb49145039 _:vb49145032 _:vb49145033 _:vb49145034 _:vb49145035
Subject Item
_:vb49145029
rdf:type
n2:Context
rdf:value
Superoxide dismutase (SOD) is a group of metalloenzymes that catalyze the disproportionation of superoxide radicals into H2O2 (Fridovich, >>1986<<; Halliwell and Gutteridge, 2000). SODs are classified into three main types containing Mn, Fe, or Cu plus Zn as prosthetic metals and they are present in all cell compartments (Parker et al., 1984; Zelko et al., 2002).
n2:mentions
n3:3010872
Subject Item
_:vb49145030
rdf:type
n2:Context
rdf:value
In eukaryotic cells from different organisms, it has been demonstrated that Mn-, Fe-, and CuZn-SODs undergo inactivation by peroxynitrite-mediated nitration (Demicheli et al., >>2007<<; Martinez et al., 2014) and SOD activity is increased after GSNO treatment (Sehrawat et al., 2013).
n2:mentions
n3:17395009
Subject Item
_:vb49145031
rdf:type
n2:Context
rdf:value
In eukaryotic cells from different organisms, it has been demonstrated that Mn-, Fe-, and CuZn-SODs undergo inactivation by peroxynitrite-mediated nitration (Demicheli et al., 2007; Martinez et al., >>2014<<) and SOD activity is increased after GSNO treatment (Sehrawat et al., 2013).
n2:mentions
n3:24616096
Subject Item
_:vb49145032
rdf:type
n2:Context
rdf:value
Thus, whereas S-nitrosylation did not affect SOD activities, nitration inhibited Mn-SOD1, Fe-SOD3, and CuZn-SOD3 activity to different degrees but affected no other SOD isozymes (Holzmeister et al., >>2015<<).
n2:mentions
n3:25428993
Subject Item
_:vb49145033
rdf:type
n2:Context
rdf:value
On the other hand, catalase, which is a peroxisomal key enzyme that regulates H2O2 levels (Chance et al., >>1979<<; Kirkman and Gaetani, 1984), was one of the first antioxidant enzymes to be analyzed in vitro to check how its activity can be modulated by NO donors (Clark et al., 2000).
n2:mentions
n3:37532
Subject Item
_:vb49145034
rdf:type
n2:Context
rdf:value
On the other hand, catalase, which is a peroxisomal key enzyme that regulates H2O2 levels (Chance et al., 1979; Kirkman and Gaetani, >>1984<<), was one of the first antioxidant enzymes to be analyzed in vitro to check how its activity can be modulated by NO donors (Clark et al., 2000).
n2:mentions
n3:6589599
Subject Item
_:vb49145035
rdf:type
n2:Context
rdf:value
key enzyme that regulates H2O2 levels (Chance et al., 1979; Kirkman and Gaetani, 1984), was one of the first antioxidant enzymes to be analyzed in vitro to check how its activity can be modulated by NO donors (Clark et al., >>2000<<). At present, it is known that plant catalase can be nitrated and S-nitrosylated in vitro, both of which inhibit its activity (Clark et al., 2000; Ortega-Galisteo et al., 2012), although, according to the literature available, the
n2:mentions
n3:11106031
Subject Item
_:vb49145036
rdf:type
n2:Context
rdf:value
At present, it is known that plant catalase can be nitrated and S-nitrosylated in vitro, both of which inhibit its activity (Clark et al., >>2000<<; Ortega-Galisteo et al., 2012), although, according to the literature available, the specific target residues have not yet been identified.
n2:mentions
n3:11106031
Subject Item
_:vb49145037
rdf:type
n2:Context
rdf:value
At present, it is known that plant catalase can be nitrated and S-nitrosylated in vitro, both of which inhibit its activity (Clark et al., 2000; Ortega-Galisteo et al., >>2012<<), although, according to the literature available, the specific target residues have not yet been identified.
n2:mentions
n3:22213812
Subject Item
_:vb49145038
rdf:type
n2:Context
rdf:value
that catalase undergoes increasing nitration during pepper fruit maturation, decreasing its activity as consequence of potential tyrosine nitration as corroborated after treatment with SIN-1 (a peroxynitrite donor; Chaki et al., >>2015<<). This inhibition could imply a lower capacity for removing H2O2 and therefore is well correlated with the increase of the oxidative metabolism observed during this physiological process (MartĂ­ et al., 2011; Chaki et al., 2015).
n2:mentions
n3:25814060
Subject Item
_:vb49145039
rdf:type
n2:Context
rdf:value
This inhibition could imply a lower capacity for removing H2O2 and therefore is well correlated with the increase of the oxidative metabolism observed during this physiological process (MartĂ­ et al., >>2011<<; Chaki et al., 2015).
n2:mentions
n3:21792678
Subject Item
_:vb49145040
rdf:type
n2:Context
rdf:value
This inhibition could imply a lower capacity for removing H2O2 and therefore is well correlated with the increase of the oxidative metabolism observed during this physiological process (MartĂ­ et al., 2011; Chaki et al., >>2015<<).
n2:mentions
n3:25814060
Subject Item
_:vb49145041
rdf:type
n7:Section
dc:title
ascorbate-glutathione cycle and nitric oxide-ptms
n7:contains
_:vb49145088 _:vb49145089 _:vb49145090 _:vb49145091 _:vb49145092 _:vb49145093 _:vb49145094 _:vb49145095 _:vb49145096 _:vb49145097 _:vb49145098 _:vb49145099 _:vb49145100 _:vb49145101 _:vb49145102 _:vb49145103 _:vb49145104 _:vb49145105 _:vb49145056 _:vb49145057 _:vb49145058 _:vb49145059 _:vb49145060 _:vb49145061 _:vb49145062 _:vb49145063 _:vb49145064 _:vb49145065 _:vb49145066 _:vb49145067 _:vb49145068 _:vb49145069 _:vb49145070 _:vb49145071 _:vb49145072 _:vb49145073 _:vb49145074 _:vb49145075 _:vb49145076 _:vb49145077 _:vb49145078 _:vb49145079 _:vb49145080 _:vb49145081 _:vb49145082 _:vb49145083 _:vb49145084 _:vb49145085 _:vb49145086 _:vb49145087 _:vb49145042 _:vb49145043 _:vb49145044 _:vb49145045 _:vb49145046 _:vb49145047 _:vb49145048 _:vb49145049 _:vb49145050 _:vb49145051 _:vb49145052 _:vb49145053 _:vb49145054 _:vb49145055
Subject Item
_:vb49145042
rdf:type
n2:Context
rdf:value
Ascorbate-glutathione cycle is a pivotal antioxidant system involved in the regulation of H2O2 levels (Asada, 1992; Noctor and Foyer, >>1998<<; Shigeoka et al., 2002) under development and unfavorable conditions in plant cells.
n2:mentions
n3:15012235
Subject Item
_:vb49145043
rdf:type
n2:Context
rdf:value
Ascorbate-glutathione cycle is a pivotal antioxidant system involved in the regulation of H2O2 levels (Asada, 1992; Noctor and Foyer, 1998; Shigeoka et al., >>2002<<) under development and unfavorable conditions in plant cells. The cycle is composed of the enzymes APX, MDAR, DHAR, and GR plus the non-enzymatic antioxidants ascorbate and glutathione (GSH).
n2:mentions
n3:11997377
Subject Item
_:vb49145044
rdf:type
n2:Context
rdf:value
ProteinNO-PTMEffectsTargetPlant speciesReferenceAscorbate peroxidase (APX)Tyrosine nitrationDecreased activityTyr235(1)Pisum sativumBegara-Morales et al., >>2014<<S-nitrosylationIncreased activityCys32(1)(2)(3)Arabidopsis thaliana,Begara-Morales et al., 2014;Pisum sativumYang et al., 2015Monodehydro-ascorbate reductase (MDAR)Tyrosine nitrationDecreased activityTyr345(1)Pisum sativumBegara-Morales et
n2:mentions
n3:24288182
Subject Item
_:vb49145045
rdf:type
n2:Context
rdf:value
speciesReferenceAscorbate peroxidase (APX)Tyrosine nitrationDecreased activityTyr235(1)Pisum sativumBegara-Morales et al., 2014S-nitrosylationIncreased activityCys32(1)(2)(3)Arabidopsis thaliana,Begara-Morales et al., >>2014<<;Pisum sativumYang et al., 2015Monodehydro-ascorbate reductase (MDAR)Tyrosine nitrationDecreased activityTyr345(1)Pisum sativumBegara-Morales et al., 2015S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al.,
n2:mentions
n3:24288182
Subject Item
_:vb49145046
rdf:type
n2:Context
rdf:value
peroxidase (APX)Tyrosine nitrationDecreased activityTyr235(1)Pisum sativumBegara-Morales et al., 2014S-nitrosylationIncreased activityCys32(1)(2)(3)Arabidopsis thaliana,Begara-Morales et al., 2014;Pisum sativumYang et al., >>2015<<Monodehydro-ascorbate reductase (MDAR)Tyrosine nitrationDecreased activityTyr345(1)Pisum sativumBegara-Morales et al., 2015S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al., 2015Dehydro-ascorbate reductase
n2:mentions
n3:25667317
Subject Item
_:vb49145047
rdf:type
n2:Context
rdf:value
activityCys32(1)(2)(3)Arabidopsis thaliana,Begara-Morales et al., 2014;Pisum sativumYang et al., 2015Monodehydro-ascorbate reductase (MDAR)Tyrosine nitrationDecreased activityTyr345(1)Pisum sativumBegara-Morales et al., >>2015<<S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al., 2015Dehydro-ascorbate reductase (DHAR)Tyrosine nitrationN.D.N.D.N.D.Fares et al., 2011; Kato et al., 2013; Puyaubert et al., 2014S-nitrosylationDecreased
n2:mentions
n3:26116026
Subject Item
_:vb49145048
rdf:type
n2:Context
rdf:value
2014;Pisum sativumYang et al., 2015Monodehydro-ascorbate reductase (MDAR)Tyrosine nitrationDecreased activityTyr345(1)Pisum sativumBegara-Morales et al., 2015S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al., >>2015<<Dehydro-ascorbate reductase (DHAR)Tyrosine nitrationN.D.N.D.N.D.Fares et al., 2011; Kato et al., 2013; Puyaubert et al., 2014S-nitrosylationDecreased activityCys20(1)(2),Arabidopsis thaliana;Cys147(1)(2)Solanum tuberosumGlutathione
n2:mentions
n3:26116026
Subject Item
_:vb49145049
rdf:type
n2:Context
rdf:value
nitrationDecreased activityTyr345(1)Pisum sativumBegara-Morales et al., 2015S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al., 2015Dehydro-ascorbate reductase (DHAR)Tyrosine nitrationN.D.N.D.N.D.Fares et al., >>2011<<; Kato et al., 2013; Puyaubert et al., 2014S-nitrosylationDecreased activityCys20(1)(2),Arabidopsis thaliana;Cys147(1)(2)Solanum tuberosumGlutathione reductase (GR)Tyrosine nitrationNo effectN.D.Pisum sativumBegara-Morales et al.,
n2:mentions
n3:22115780
Subject Item
_:vb49145050
rdf:type
n2:Context
rdf:value
activityTyr345(1)Pisum sativumBegara-Morales et al., 2015S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al., 2015Dehydro-ascorbate reductase (DHAR)Tyrosine nitrationN.D.N.D.N.D.Fares et al., 2011; Kato et al., >>2013<<; Puyaubert et al., 2014S-nitrosylationDecreased activityCys20(1)(2),Arabidopsis thaliana;Cys147(1)(2)Solanum tuberosumGlutathione reductase (GR)Tyrosine nitrationNo effectN.D.Pisum sativumBegara-Morales et al.,
n2:mentions
n3:22924747
Subject Item
_:vb49145051
rdf:type
n2:Context
rdf:value
et al., 2015S-nitrosylationDecreased activityCys68(3)Pisum sativumBegara-Morales et al., 2015Dehydro-ascorbate reductase (DHAR)Tyrosine nitrationN.D.N.D.N.D.Fares et al., 2011; Kato et al., 2013; Puyaubert et al., >>2014<<S-nitrosylationDecreased activityCys20(1)(2),Arabidopsis thaliana;Cys147(1)(2)Solanum tuberosumGlutathione reductase (GR)Tyrosine nitrationNo effectN.D.Pisum sativumBegara-Morales et al., 2015S-nitrosylationNitration and S-nitrosylation
n2:mentions
n3:24388526
Subject Item
_:vb49145052
rdf:type
n2:Context
rdf:value
2011; Kato et al., 2013; Puyaubert et al., 2014S-nitrosylationDecreased activityCys20(1)(2),Arabidopsis thaliana;Cys147(1)(2)Solanum tuberosumGlutathione reductase (GR)Tyrosine nitrationNo effectN.D.Pisum sativumBegara-Morales et al., >>2015<<S-nitrosylationNitration and S-nitrosylation targets have been identified by different technological approaches:
n2:mentions
n3:26116026
Subject Item
_:vb49145053
rdf:type
n2:Context
rdf:value
Proteomic approaches have identified all enzymes of the Asa-GSH cycle as potential nitrated proteins (Chaki et al., 2009b; Lin et al., 2012; Tanou et al., 2012).
n2:mentions
n3:19717529
Subject Item
_:vb49145054
rdf:type
n2:Context
rdf:value
Proteomic approaches have identified all enzymes of the Asa-GSH cycle as potential nitrated proteins (Chaki et al., 2009b; Lin et al., >>2012<<; Tanou et al., 2012).
n2:mentions
n3:22106097
Subject Item
_:vb49145055
rdf:type
n2:Context
rdf:value
Proteomic approaches have identified all enzymes of the Asa-GSH cycle as potential nitrated proteins (Chaki et al., 2009b; Lin et al., 2012; Tanou et al., >>2012<<). However, information related to the specific impact of this modification on the structure of these target proteins and the role of the tyrosine target of nitration is necessary in order to understand the cross-talk between NO and ROS in
n2:mentions
n3:22780834
Subject Item
_:vb49145056
rdf:type
n2:Context
rdf:value
the tyrosine target(s) of nitration and its (their) potential role within the mechanistic activity of the Asa-GSH cycle enzymes, showing that this NO-PTM could compromise the Asa-GSH cycle functioning (Begara-Morales et al., >>2014<<, 2015). Pea cytosolic APX is inactivated by ONOO- as consequence of tyrosine nitration (Begara-Morales et al., 2014) and as result the detoxification of H2O2 by Asa-GSH cycle could be compromised (Figure 1).
n2:mentions
n3:24288182
Subject Item
_:vb49145057
rdf:type
n2:Context
rdf:value
the tyrosine target(s) of nitration and its (their) potential role within the mechanistic activity of the Asa-GSH cycle enzymes, showing that this NO-PTM could compromise the Asa-GSH cycle functioning (Begara-Morales et al., 2014, >>2015<<). Pea cytosolic APX is inactivated by ONOO- as consequence of tyrosine nitration (Begara-Morales et al., 2014) and as result the detoxification of H2O2 by Asa-GSH cycle could be compromised (Figure 1).
n2:mentions
n3:26116026
Subject Item
_:vb49145058
rdf:type
n2:Context
rdf:value
Pea cytosolic APX is inactivated by ONOO- as consequence of tyrosine nitration (Begara-Morales et al., >>2014<<) and as result the detoxification of H2O2 by Asa-GSH cycle could be compromised (Figure 1).
n2:mentions
n3:24288182
Subject Item
_:vb49145059
rdf:type
n2:Context
rdf:value
and in silico approaches identified the Tyr235 as the most reliable target responsible for APX inactivation, since this residue is located just at 3.6 Ă… from the heme group at the bottom of the catalytic pocket (Patterson and Poulos, >>1995<<; Jespersen et al., 1997; Mandelman et al., 1998; Begara-Morales et al., 2014). Consequently, Tyr235 nitration may disrupt heme-group properties and result in a loss of activity (Begara-Morales et al., 2014).
n2:mentions
n3:7703247
Subject Item
_:vb49145060
rdf:type
n2:Context
rdf:value
identified the Tyr235 as the most reliable target responsible for APX inactivation, since this residue is located just at 3.6 Ă… from the heme group at the bottom of the catalytic pocket (Patterson and Poulos, 1995; Jespersen et al., >>1997<<; Mandelman et al., 1998; Begara-Morales et al., 2014). Consequently, Tyr235 nitration may disrupt heme-group properties and result in a loss of activity (Begara-Morales et al., 2014).
n2:mentions
n3:9291097
Subject Item
_:vb49145061
rdf:type
n2:Context
rdf:value
as the most reliable target responsible for APX inactivation, since this residue is located just at 3.6 Ă… from the heme group at the bottom of the catalytic pocket (Patterson and Poulos, 1995; Jespersen et al., 1997; Mandelman et al., >>1998<<; Begara-Morales et al., 2014). Consequently, Tyr235 nitration may disrupt heme-group properties and result in a loss of activity (Begara-Morales et al., 2014).
n2:mentions
n3:9860877
Subject Item
_:vb49145062
rdf:type
n2:Context
rdf:value
for APX inactivation, since this residue is located just at 3.6 Ă… from the heme group at the bottom of the catalytic pocket (Patterson and Poulos, 1995; Jespersen et al., 1997; Mandelman et al., 1998; Begara-Morales et al., >>2014<<). Consequently, Tyr235 nitration may disrupt heme-group properties and result in a loss of activity (Begara-Morales et al., 2014).
n2:mentions
n3:24288182
Subject Item
_:vb49145063
rdf:type
n2:Context
rdf:value
Consequently, Tyr235 nitration may disrupt heme-group properties and result in a loss of activity (Begara-Morales et al., >>2014<<).
n2:mentions
n3:24288182
Subject Item
_:vb49145064
rdf:type
n2:Context
rdf:value
In this case, ONOO- mediates nitration of recombinant pea MDAR at Tyr213, Tyr292, and Tyr345, causing an inhibition of the enzymatic activity (Begara-Morales et al., >>2015<<), and therefore may disrupt the regeneration of ascorbate and compromise the functioning of the Asa-GSH cycle.
n2:mentions
n3:26116026
Subject Item
_:vb49145065
rdf:type
n2:Context
rdf:value
tyrosine is located just at 3.3 Å from His313, which is involved in NADP binding, suggesting that the nitration of this tyrosine could alter the positioning of the cofactor, thereby decreasing protein activity (Begara-Morales et al., >>2015<<). DHAR is the other enzyme involved in the regeneration of ascorbate, but, although DHAR has been reported to be nitrated (Tanou et al., 2012) and its activity modulated by NO (see Groβ et al., 2013), no information is available on the
n2:mentions
n3:26116026
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DHAR is the other enzyme involved in the regeneration of ascorbate, but, although DHAR has been reported to be nitrated (Tanou et al., >>2012<<) and its activity modulated by NO (see Groβ et al., 2013), no information is available on the tyrosine(s) involved in this modification and the impact on the protein structure.
n2:mentions
n3:22780834
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Glutathione reductase has also been identified as tyrosine nitration target (Chaki et al., 2009b). In animals, peroxynitrite inhibits human and bovine GR activity by nitration of Tyr106 and Tyr114 which are located close to the GSSG binding zone (Francescutti et al., 1996; Savvides et al., 2002).
n2:mentions
n3:19717529
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In animals, peroxynitrite inhibits human and bovine GR activity by nitration of Tyr106 and Tyr114 which are located close to the GSSG binding zone (Francescutti et al., >>1996<<; Savvides et al., 2002).
n2:mentions
n3:9005440
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In animals, peroxynitrite inhibits human and bovine GR activity by nitration of Tyr106 and Tyr114 which are located close to the GSSG binding zone (Francescutti et al., 1996; Savvides et al., >>2002<<). However, very recently and in contrast to animals, it has been strikingly shown that chloroplastic and cytosolic pea GR activities are not affected by peroxynitrite-mediated tyrosine nitration (Begara-Morales et al., 2015). This
n2:mentions
n3:11705998
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However, very recently and in contrast to animals, it has been strikingly shown that chloroplastic and cytosolic pea GR activities are not affected by peroxynitrite-mediated tyrosine nitration (Begara-Morales et al., >>2015<<). This behavior is unusual in higher plants, where the main effect of tyrosine nitration on target proteins is usually a loss of function (Astier and Lindermayr, 2012; Begara-Morales et al., 2013; Chaki et al., 2013; Corpas et al., 2013).
n2:mentions
n3:26116026
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This behavior is unusual in higher plants, where the main effect of tyrosine nitration on target proteins is usually a loss of function (Astier and Lindermayr, >>2012<<; Begara-Morales et al., 2013; Chaki et al., 2013; Corpas et al., 2013).
n2:mentions
n3:23203119
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This behavior is unusual in higher plants, where the main effect of tyrosine nitration on target proteins is usually a loss of function (Astier and Lindermayr, 2012; Begara-Morales et al., >>2013<<; Chaki et al., 2013; Corpas et al., 2013).
n2:mentions
n3:23362300
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This behavior is unusual in higher plants, where the main effect of tyrosine nitration on target proteins is usually a loss of function (Astier and Lindermayr, 2012; Begara-Morales et al., 2013; Chaki et al., >>2013<<; Corpas et al., 2013).
n2:mentions
n3:23266784
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This behavior is unusual in higher plants, where the main effect of tyrosine nitration on target proteins is usually a loss of function (Astier and Lindermayr, 2012; Begara-Morales et al., 2013; Chaki et al., 2013; Corpas et al., >>2013<<).
n2:mentions
n3:23860243
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For instance, NO regulates many enzymes involved in ROS/RNS generation/scavenging such as GSNOR (Frungillo et al., 2014), NADPH oxidase (Yun et al., >>2011<<), catalase (Ortega-Galisteo et al., 2012), and peroxiredoxinII E (Romero-Puertas et al., 2007) and II F (Camejo et al., 2015).
n2:mentions
n3:21964330
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For instance, NO regulates many enzymes involved in ROS/RNS generation/scavenging such as GSNOR (Frungillo et al., 2014), NADPH oxidase (Yun et al., 2011), catalase (Ortega-Galisteo et al., >>2012<<), and peroxiredoxinII E (Romero-Puertas et al., 2007) and II F (Camejo et al., 2015).
n2:mentions
n3:22213812
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NO regulates many enzymes involved in ROS/RNS generation/scavenging such as GSNOR (Frungillo et al., 2014), NADPH oxidase (Yun et al., 2011), catalase (Ortega-Galisteo et al., 2012), and peroxiredoxinII E (Romero-Puertas et al., >>2007<<) and II F (Camejo et al., 2015).
n2:mentions
n3:18165327
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involved in ROS/RNS generation/scavenging such as GSNOR (Frungillo et al., 2014), NADPH oxidase (Yun et al., 2011), catalase (Ortega-Galisteo et al., 2012), and peroxiredoxinII E (Romero-Puertas et al., 2007) and II F (Camejo et al., >>2015<<). S-nitrosylation appears to be critical to GSNO and ONOO- homeostasis as this NO-PTM inhibits GSNOR and PrxII E activities (Romero-Puertas et al., 2007; Frungillo et al., 2014) that decompose GSNO and ONOO-, respectively.
n2:mentions
n3:25682994
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S-nitrosylation appears to be critical to GSNO and ONOO- homeostasis as this NO-PTM inhibits GSNOR and PrxII E activities (Romero-Puertas et al., >>2007<<; Frungillo et al., 2014) that decompose GSNO and ONOO-, respectively.
n2:mentions
n3:18165327
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A connection has also been observed between NO and ROS pathway under different physiological and stress conditions (Corpas et al., >>2011<<; Groβ et al., 2013; Procházková et al., 2014).
n2:mentions
n3:21893257
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Furthermore, all components of Asa-GSH cycle have been reported to be S-nitrosylated (Lin et al., >>2012<<; Tanou et al., 2012) with a different effect on protein activity (Kato et al., 2013; Begara-Morales et al., 2014, 2015).
n2:mentions
n3:22106097
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Furthermore, all components of Asa-GSH cycle have been reported to be S-nitrosylated (Lin et al., 2012; Tanou et al., >>2012<<) with a different effect on protein activity (Kato et al., 2013; Begara-Morales et al., 2014, 2015).
n2:mentions
n3:22780834
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Furthermore, all components of Asa-GSH cycle have been reported to be S-nitrosylated (Lin et al., 2012; Tanou et al., 2012) with a different effect on protein activity (Kato et al., >>2013<<; Begara-Morales et al., 2014, 2015).
n2:mentions
n3:22924747
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Furthermore, all components of Asa-GSH cycle have been reported to be S-nitrosylated (Lin et al., 2012; Tanou et al., 2012) with a different effect on protein activity (Kato et al., 2013; Begara-Morales et al., >>2014<<, 2015).
n2:mentions
n3:24288182
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Furthermore, all components of Asa-GSH cycle have been reported to be S-nitrosylated (Lin et al., 2012; Tanou et al., 2012) with a different effect on protein activity (Kato et al., 2013; Begara-Morales et al., 2014, >>2015<<).
n2:mentions
n3:26116026
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Dehydroascorbate reductase has been identified as S-nitrosylation target at Cys20 under no-stress conditions in Arabidopsis, and this Cys20 is not over-nitrosylated under salinity or cold stress (Fares et al., >>2011<<; Puyaubert et al., 2014). Recently, it has been reported that S-nitrosylation at Cys20 and Cys147 negatively regulates the enzymatic activity of DHAR in potato plants (Kato et al., 2013).
n2:mentions
n3:22115780
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n2:Context
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Dehydroascorbate reductase has been identified as S-nitrosylation target at Cys20 under no-stress conditions in Arabidopsis, and this Cys20 is not over-nitrosylated under salinity or cold stress (Fares et al., 2011; Puyaubert et al., >>2014<<). Recently, it has been reported that S-nitrosylation at Cys20 and Cys147 negatively regulates the enzymatic activity of DHAR in potato plants (Kato et al., 2013).
n2:mentions
n3:24388526
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_:vb49145088
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Recently, it has been reported that S-nitrosylation at Cys20 and Cys147 negatively regulates the enzymatic activity of DHAR in potato plants (Kato et al., >>2013<<). Furthermore, peroxisomal recombinant pea MDAR, which has only two cysteines (Cys197 and Cys68) is also inhibited by S-nitrosylation (Begara-Morales et al., 2015). The authors suggest using in silico and evolutionary analysis that Cys68
n2:mentions
n3:22924747
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Furthermore, peroxisomal recombinant pea MDAR, which has only two cysteines (Cys197 and Cys68) is also inhibited by S-nitrosylation (Begara-Morales et al., >>2015<<). The authors suggest using in silico and evolutionary analysis that Cys68 could be the most reliable residue responsible for the loss of activity following GSNO treatment. However, future experiments such as site-directed mutagenesis
n2:mentions
n3:26116026
Subject Item
_:vb49145090
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In any case, it is clear that peroxisomal pea MDAR is S-nitrosylated by GSNO, as corroborated by the biotin-switch method, and as result the protein activity is inhibited (Begara-Morales et al., >>2015<<). The inhibition of DHAR and MDAR by S-nitrosylation (Figure 1) could compromise ascorbate regeneration and therefore the functioning of the cycle. Notably, in the same work it is shown that chloroplastic and cytosolic pea GR are also
n2:mentions
n3:26116026
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In mammal cells GSNO treatment for 1h does not affect GR, although an inhibitory effect is produced after longer exposures to GSNO (Beltrán et al., >>2000<<). In addition, human GR is inhibited by GSNO as consequence of S-nitrosylation of two catalytic Cys, Cys63 and/or Cys58 (Becker et al., 1995; Francescutti et al., 1996). These results suggest a different regulation of pea and mammalian GR
n2:mentions
n3:10696095
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In addition, human GR is inhibited by GSNO as consequence of S-nitrosylation of two catalytic Cys, Cys63 and/or Cys58 (Becker et al., >>1995<<; Francescutti et al., 1996).
n2:mentions
n3:8536691
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In addition, human GR is inhibited by GSNO as consequence of S-nitrosylation of two catalytic Cys, Cys63 and/or Cys58 (Becker et al., 1995; Francescutti et al., >>1996<<). These results suggest a different regulation of pea and mammalian GR since that pea GR activity could be unaffected by any NO-PTMs under a nitro-oxidative stress situation (Begara-Morales et al., 2015) in an attempt to maintain GSH
n2:mentions
n3:9005440
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These results suggest a different regulation of pea and mammalian GR since that pea GR activity could be unaffected by any NO-PTMs under a nitro-oxidative stress situation (Begara-Morales et al., >>2015<<) in an attempt to maintain GSH levels and consequently the cellular redox state.
n2:mentions
n3:26116026
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APX S-nitrosylation could have an essential role in physiological and stress conditions via regulation of APX activity (Correa-Aragunde et al., >>2013<<; de Pinto et al., 2013; Begara-Morales et al., 2014), highlighting that APX can constitute a critical interface in the relationship between NO and H2O2 metabolism (Lindermayr and Durner, 2015).
n2:mentions
n3:23918967
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APX S-nitrosylation could have an essential role in physiological and stress conditions via regulation of APX activity (Correa-Aragunde et al., 2013; de Pinto et al., >>2013<<; Begara-Morales et al., 2014), highlighting that APX can constitute a critical interface in the relationship between NO and H2O2 metabolism (Lindermayr and Durner, 2015).
n2:mentions
n3:24158396
Subject Item
_:vb49145097
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APX S-nitrosylation could have an essential role in physiological and stress conditions via regulation of APX activity (Correa-Aragunde et al., 2013; de Pinto et al., 2013; Begara-Morales et al., >>2014<<), highlighting that APX can constitute a critical interface in the relationship between NO and H2O2 metabolism (Lindermayr and Durner, 2015).
n2:mentions
n3:24288182
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of APX activity (Correa-Aragunde et al., 2013; de Pinto et al., 2013; Begara-Morales et al., 2014), highlighting that APX can constitute a critical interface in the relationship between NO and H2O2 metabolism (Lindermayr and Durner, >>2015<<). It has been suggested that Arabidopsis APX S-nitrosylation/denitrosylation mediated by auxins could be involved in the determination of root architecture (Correa-Aragunde et al., 2013, 2015).
n2:mentions
n3:25819986
Subject Item
_:vb49145099
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It has been suggested that Arabidopsis APX S-nitrosylation/denitrosylation mediated by auxins could be involved in the determination of root architecture (Correa-Aragunde et al., >>2013<<, 2015). In this situation, APX1 is S-nitrosylated in vivo and auxins-mediated denitrosylation decreased the protein activity, an effect corroborated by the treatment of APX1 recombinant protein with CysNO (Correa-Aragunde et al., 2013).
n2:mentions
n3:23918967
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_:vb49145100
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It has been suggested that Arabidopsis APX S-nitrosylation/denitrosylation mediated by auxins could be involved in the determination of root architecture (Correa-Aragunde et al., 2013, >>2015<<). In this situation, APX1 is S-nitrosylated in vivo and auxins-mediated denitrosylation decreased the protein activity, an effect corroborated by the treatment of APX1 recombinant protein with CysNO (Correa-Aragunde et al., 2013). In
n2:mentions
n3:26229066
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_:vb49145101
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In this situation, APX1 is S-nitrosylated in vivo and auxins-mediated denitrosylation decreased the protein activity, an effect corroborated by the treatment of APX1 recombinant protein with CysNO (Correa-Aragunde et al., >>2013<<). In contrast, de Pinto et al. (2013) reported that APX S-nitrosylation mediated by GSNO inhibits protein activity in tobacco plants and that this change could be related to programmed cell death (PCD). By in silico analysis, in the
n2:mentions
n3:23918967
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In contrast, de Pinto et al. (>>2013<<) reported that APX S-nitrosylation mediated by GSNO inhibits protein activity in tobacco plants and that this change could be related to programmed cell death (PCD).
n2:mentions
n3:24158396
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However, Clark et al. (>>2000<<) reported that the inactivation of tobacco APX activity by GSNO could be due to the formation of an iron-nitrosyl complex between NO and the heme group’s iron atom.
n2:mentions
n3:11106031
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Another study described an increase in S-nitrosylation of pea APX as a protective mechanism in response to salinity stress (Begara-Morales et al., >>2014<<). In this case, the cytosolic pea APX activity is stimulated by S-nitrosylation in vitro and in vivo.
n2:mentions
n3:24288182
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This finding has been recently corroborated by Yang et al. (>>2015<<), who showed using proteomic and mutagenesis approaches that S-nitrosylation at Cys32 positively regulates APX1 activity in Arabidopsis.
n2:mentions
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