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Sci. STKE, 12 June 2001
Vol. 2001, Issue 86, p. re1
[DOI: 10.1126/scisignal.862001re1]

REVIEWS

S-Nitrosylation Is Emerging as a Specific and Fundamental Posttranslational Protein Modification: Head-to-Head Comparison with O-Phosphorylation

Paul Lane, Gang Hao, and Steven S. Gross

The authors are in the Department of Pharmacology, Weill Medical College of Cornell University, 1300 York Avenue, Room LC-218, New York, NY 10021, USA. E-mail: ssgross{at}med.cornell.edu.

Abstract: Nitric oxide (NO) is a free-radical product of mammalian cell metabolism that plays diverse and important roles in the regulation of cell function. Biological actions of NO arise as a direct consequence of chemical reactions between NO or NO-derived species and protein targets. Reactions of NO with transition metals in target proteins have garnered the most attention to date as the principal mechanism of NO signaling; nonetheless, S-nitrosylation of protein Cys residues is rapidly moving to center stage in importance. In general, however, there has been a delay in adequate appreciation of the role of S-nitrosylation in biological signaling by NO. This lag is attributed to a poor understanding of the basis for selective targeting of NO to particular thiols, and methodological limitations in accurately quantifying this modification--recent breakthroughs in concepts and methods diminish these barriers. Here, we consider the wheres and whys of protein S-nitrosylation and its basis for specificity. Protein S-nitrosylation potentially represents a ubiquitous and fundamental mechanism for posttranslational control of protein activity on a par with that of O-phosphorylation.

Citation: P. Lane, G. Hao, S. S. Gross, S-Nitrosylation Is Emerging as a Specific and Fundamental Posttranslational Protein Modification: Head-to-Head Comparison with O-Phosphorylation. Sci. STKE 2001, re1 (2001).

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