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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Cross, A. R. Babior, B. M. Dang, P. M. |
| Description | Author Affiliation: Dang PM ( Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.); |
| Abstract | Activation of the phagocyte NADPH oxidase complex requires the assembly of the cytosolic factors p47(PHOX), p67(PHOX), p40(PHOX), and Rac1 or Rac2, with the membrane-bound cytochrome b(558). Whereas the interaction of p47(PHOX) with cytochrome b(558) is well established, an interaction between p67(PHOX) and cytochrome b(558) has never been investigated. We report here a direct interaction between p67(PHOX) and cytochrome b(558). First, labeled p67(PHOX) recognizes a 91-kDa band in specific granules from a normal patient but not from a cytochrome b(558)-deficient patient. Second, p67(PHOX) binds to cytochrome b(558) that has been bound to nitrocellulose. Third, GTP-p67(PHOX) bound to glutathione agarose is able to pull down cytochrome b(558.) Rac1-GTP or Rac1-GDP increased the binding of p67(PHOX) to cytochrome b(558), suggesting that at least one of the oxidase-related functions of Rac1 is to promote the interaction between p67(PHOX) and cytochrome b(558). |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 98 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2001-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cytochrome b Group Metabolism Membrane Glycoproteins NADPH Oxidase Neutrophils Enzymology Phosphoproteins Guanosine 5'-O-(3-Thiotriphosphate) NADH, NADPH Oxidoreductases Genetics Recombinant Fusion Proteins Respiratory Burst Rac1 GTP-Binding Protein Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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