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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Rhee, S. G. Poole, L. B. Church, G. Storz, G. Robison, K. Chae, H. Z. |
| Description | Author Affiliation: Chae HZ ( Laboratory of Biochemistry, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892.); |
| Abstract | A cDNA corresponding to a thiol-specific antioxidant enzyme (TSA) was isolated from a rat brain cDNA library with the use of antibodies to bovine TSA. The cDNA clone encoded an open reading frame capable of encoding a 198-residue polypeptide. The rat and yeast TSA proteins show significant sequence homology to the 21-kDa component (AhpC) of Salmonella typhimurium alkyl hydroperoxide reductase, and we have found that AhpC exhibits TSA activity. AhpC and TSA define a family of > 25 different proteins present in organisms from all kingdoms. The similarity among the family members extends over the entire sequence and ranges between 23% and 98% identity. A majority of the members of the AhpC/TSA family contain two conserved cysteines. At least eight of the genes encoding AhpC/TSA-like polypeptides are found in proximity to genes encoding other oxidoreductase activities, and the expression of several of the homologs has been correlated with pathogenicity. We suggest that the AhpC/TSA family represents a widely distributed class of antioxidant enzymes. We also report that a second family of proteins, defined by the 57-kDa component (AhpF) of alkyl hydroperoxide reductase and by thioredoxin reductase, has expanded to include six additional members. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 91 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1994-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antioxidants Metabolism Brain Enzymology Oxidoreductases Peroxidases Proteins Amino Acid Sequence Animals Chemistry Cloning, Molecular DNA Molecular Sequence Data Peroxiredoxins Sequence Homology, Amino Acid Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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