title: Protein nitrotryptophan: formation, significance and identification.
abstract: Reactive nitrogen species are formed during a variety of disease states and have been shown to modify several amino acids on proteins. To date, the majority of research in this area has focused on the nitration of tyrosine residues to form 3-nitrotyrosine. However, emerging evidence suggests that another modification, nitration of tryptophan residues, to form nitrotryptophan (NO(2)-Trp), may also play a significant role in the biology of nitrosative stress. This review takes an in-depth look at NO(2)-Trp, presenting the current research about its formation, prevalence and biological significance, as well as the methods used to identify NO(2)-Trp-modified proteins. Although more research is needed to understand the full biological role of NO(2)-Trp, the data presented herein suggest a contribution to nitrosative stress-induced cell dysregulation and perhaps even in physiological cell processes.
authors.affiliation: Department of Pharmacology, Weill Cornell Medical College, 1300 York Ave, New York, NY 10065, USA.
authors.forename: Tal
authors.initials: T
authors.lastname: Nuriel
authors.forename: Alex
authors.initials: A
authors.lastname: Hansler
authors.forename: Steven S
authors.initials: SS
authors.lastname: Gross
mesh_terms: D000818:Animals; D001419:Bacteria / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D008954:Models, Biological; D009574:Nitro Compounds / Q000302:isolation & purification* / Q000378:metabolism* / Q000494:pharmacology; D015538:Nitrosation / Q000502:physiology; D011499:Protein Processing, Post-Translational; D011506:Proteins / Q000302:isolation & purification* / Q000378:metabolism* / Q000502:physiology; D026361:Reactive Nitrogen Species / Q000378:metabolism*; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D009574:Nitro Compounds; D011506:Proteins; D026361:Reactive Nitrogen Species; D014364:Tryptophan