- Nitrosylation
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Nitrosylation is a protein modification in which a nitrosyl group is post-translationally added to a protein.
There is a range of enzymes that produce nitric oxide, and the frequent consequence of this production is nitrosylation.
S-nitrosylation is an important biological reaction of nitric oxide; it refers to the conversion of thiol groups, including cysteine residues in proteins, to form S-nitrosothiols (RSNOs). S-Nitrosylation is a mechanism for dynamic, post-translational regulation of most or all major classes of protein.
Nitrosylation results in a molecule "R" adducted with the group N=O
Nitrosylation is independent of enzyme catalysis, labile modification, on/off switch-like photophosphorylation. Denitrosylation can be enzymatic or non-enzymatic. Denitros(yl)ation of S-nitrosogluthatione is catalyzed by alcohol dehydrogenase class III isoenzyme.[1], while thioredoxin catalyzes the denitros(yl)ation of a number of S-nitroisoproteins[2][3][4]
References
- ^ Jensen DE, Belka GK, Du Bois GC. Biochem J. 331 :659-68 (1998)
- ^ Stoyanovsky DA, Tyurina YY, Tyurin VA, Anand D, Mandavia DN, Gius D, Ivanova J, Pitt B, Billiar TR, Kagan VE. J Am Chem Soc. 127:15815-23 (2005)
- ^ Sengupta R, Ryter SW, Zuckerbraun BS, Tzeng E, Billiar TR, Stoyanovsky DA. Biochemistry. 46:8472-83 (2007)
- ^ Benhar M, Forrester MT, Hess DT, Stamler JS. Science. 320:1050-4 (2008)
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