Sulfenic acid in human serum albumin.
Amino Acids
; 32(4): 543-51, 2007.
Article
em En
| MEDLINE
| ID: mdl-17061035
ABSTRACT
Sulfenic acid (RSOH) is a central intermediate in both the reversible and irreversible redox modulation by reactive species of an increasing number of proteins involved in signal transduction and enzymatic pathways. In this paper we focus on human serum albumin (HSA), the most abundant plasma protein, proposed to serve antioxidant functions in the vascular compartment. Sulfenic acid in HSA has been previously detected using different methods after oxidation of its single free thiol Cys34 through one- or two-electron mechanisms. Since recent evidence suggests that sulfenic acid in HSA is stabilized within the protein environment, this derivative represents an appropriate model to examine protein sulfenic acid biochemistry, structure and reactivity. Sulfenic acid in HSA could be involved in mixed disufide formation, supporting a role of HSA-Cys34 as an important redox regulator in extracellular compartments.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácidos Sulfênicos
/
Albumina Sérica
/
Radicais Livres
Limite:
Humans
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article