2017
Redox regulation of plant S-nitrosoglutathione reductase activity through post-translational modifications of cysteine residues
TICHA, Tereza, Jan LOCHMAN, Lucie ČINČALOVÁ, Lenka LUHOVÁ, Marek PETŘIVALSKÝ et. al.Základní údaje
Originální název
Redox regulation of plant S-nitrosoglutathione reductase activity through post-translational modifications of cysteine residues
Autoři
TICHA, Tereza (203 Česká republika), Jan LOCHMAN (203 Česká republika, garant, domácí), Lucie ČINČALOVÁ (203 Česká republika), Lenka LUHOVÁ (203 Česká republika) a Marek PETŘIVALSKÝ (203 Česká republika)
Vydání
Biochemical and biophysical research communications, SAN DIEGO, ACADEMIC PRESS INC ELSEVIER SCIENCE, 2017, 0006-291X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.559
Kód RIV
RIV/00216224:14310/17:00100142
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000416615300006
Klíčová slova anglicky
Nitric oxide; Post-translational modifications; Redox regulation; S-nitrosoglutathione reductase; S-nitrosation
Změněno: 11. 4. 2018 12:11, Ing. Nicole Zrilić
Anotace
V originále
Nitric oxide (NO) is considered as a signalling molecule involved in a variety of important physiological and pathological processes in plant and animal systems. The major pathway of NO reactions in vivo represents S-nitrosation of thiols to form S-nitrosothiols. S-nitrosoglutathione reductase (GSNOR) is the key enzyme in the degradation pathway of S-nitrosoglutathione (GSNO), a low-molecular weight adduct of NO and glutathione. GSNOR indirectly regulates the level of protein S-nitrosothiol in the cells. This study was focused on the dynamic regulation of the activity of plant GSNORs through reversible S-nitrosation and/or oxidative modifications of target cysteine residues. Pre-incubation with NO/NO- donors or hydrogen peroxide resulted in a decreased reductase and dehydrogenase activity of all studied plant GSNORs. Incubation with thiol reducing agent completely reversed inhibitory effects of nitrosative modifications and partially also oxidative inhibition. In biotin-labelled samples, S-nitrosation of plant GSNORs was confirmed after immunodetection and using mass spectrometry S-nitrosation of conserved Cys271 was identified in tomato GSNOR. Negative regulation of constitutive GSNOR activity in vivo by nitrosative or oxidative modifications might present an important mechanism to control GSNO levels, a critical mediator of the downstream signalling effects of NO, as well as for formaldehyde detoxification in dehydrogenase reaction mode. (C) 2017 Elsevier Inc. All rights reserved.