期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 289, 期 2, 页码 382-388出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/bbrc.2001.5982
关键词
NADPH oxidase; phox proteins; moesin; PX domain
The NADPH oxidase of phagocytes is a membrane-bound heterodimeric flavocytochrome which catalyses the transfer of electrons from NADPH in the cytoplasm to oxygen in the phagosome. A number of cytosolic proteins are involved in its activation/deactivation: p47phox, p67phox, p40phox and the small GTP-binding protein, rac. The cytosolic phox proteins interact with the cytoskeleton in human neutrophils and, in particular, an interaction with coronin has been reported (Grogan A., Reeves, E., Keep, N. H., Wientjes, F., Totty, N., Burlingame, N. L., Hsuan, J., and Segal, A. W. (1997) J. Cell Sci. 110, 3071-3081). Here, we report on the interaction of another cytoskeletal protein, moesin, with the phox proteins. Moesin belongs to the ezrin-radixin-moesin family of F-actin-binding proteins and we show that it binds to p47phox and p40phox in a phosphoinositide-dependent manner. Furthermore, we show that its N-terminal part binds to the PX domain of p47phox and p40phox. (C) 2001 Elsevier Science.
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