1h6h
From Proteopedia
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'''STRUCTURE OF THE PX DOMAIN FROM P40PHOX BOUND TO PHOSPHATIDYLINOSITOL 3-PHOSPHATE''' | '''STRUCTURE OF THE PX DOMAIN FROM P40PHOX BOUND TO PHOSPHATIDYLINOSITOL 3-PHOSPHATE''' | ||
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[[Category: Perisic, O.]] | [[Category: Perisic, O.]] | ||
[[Category: Williams, R L.]] | [[Category: Williams, R L.]] | ||
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Revision as of 15:29, 2 May 2008
STRUCTURE OF THE PX DOMAIN FROM P40PHOX BOUND TO PHOSPHATIDYLINOSITOL 3-PHOSPHATE
Overview
More than 50 human proteins with a wide range of functions have a 120 residue phosphoinositide binding module known as the PX domain. The 1.7 A X-ray crystal structure of the PX domain from the p40(phox) subunit of NADPH oxidase bound to PtdIns(3)P shows that the PX domain embraces the 3-phosphate on one side of a water-filled, positively charged pocket and reveals how 3-phosphoinositide specificity is achieved. A chronic granulomatous disease (CGD)-associated mutation in the p47(phox) PX domain that abrogates PtdIns(3)P binding maps to a conserved Arg that does not directly interact with the phosphoinositide but instead appears to stabilize a critical lipid binding loop. The SH3 domain present in the full-length protein does not affect soluble PtdIns(3)P binding to the p40(phox) PX domain.
About this Structure
1H6H is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The crystal structure of the PX domain from p40(phox) bound to phosphatidylinositol 3-phosphate., Bravo J, Karathanassis D, Pacold CM, Pacold ME, Ellson CD, Anderson KE, Butler PJ, Lavenir I, Perisic O, Hawkins PT, Stephens L, Williams RL, Mol Cell. 2001 Oct;8(4):829-39. PMID:11684018 Page seeded by OCA on Fri May 2 18:29:43 2008