GSNOR

S-nitrosoglutathione reductase (GSNOR) is a cytoplasm localized enzyme which plays a key role in formaldehyde detoxification and is down regulated by wounding and activated by salicylic acid (SA). GSNOR reduces S-nitrosoglutathione (GSNO) to an unstable intermediate, S-hydroxylaminoglutathione, which then rearranges to form glutathione sulfonamide, or in the presence of GSH, forms oxidized glutathione (GSSG) and hydroxylamine. Through this catabolic process, GSNOR regulates the cellular concentrations of GSNO and plays a central role in regulating the levels of endogenous S-nitrosothiols and controlling protein S-nitrosylation-based signaling.