1oey

Heterodimer of p40phox and p67phox PB1 domains from human NADPH oxidase

spinqualitylabelsall models 1oey, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1oey is a 8 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: MSE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease NCF4_HUMAN Defects in NCF4 are the cause of chronic granulomatous disease autosomal recessive cytochrome-b-positive type 3 (CGD3) [MIM:613960. CGD3 is a disorder characterized by the inability of neutrophils and phagocytes to kill microbes that they have ingested. Patients suffer from life-threatening bacterial/fungal infections. Function NCF4_HUMAN Component of the NADPH-oxidase, a multicomponent enzyme system responsible for the oxidative burst in which electrons are transported from NADPH to molecular oxygen, generating reactive oxidant intermediates. It may be important for the assembly and/or activation of the NADPH-oxidase complex. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Maximal activation of NADPH oxidase requires formation of a complex between the p40(phox) and p67(phox) subunits via association of their PB1 domains. We have determined the crystal structure of the p40(phox)/p67(phox) PB1 heterodimer, which reveals that both domains have a beta grasp topology and that they bind in a front-to-back arrangement through conserved electrostatic interactions between an acidic OPCA motif on p40(phox) and basic residues in p67(phox). The structure enabled us to identify residues critical for heterodimerization among other members of the PB1 domain family, including the atypical protein kinase C zeta (PKC zeta) and its partners Par6 and p62 (ZIP, sequestosome). Both Par6 and p62 use their basic "back" to interact with the OPCA motif on the "front" of the PKC zeta. Besides heterodimeric interactions, some PB1 domains, like the p62 PB1, can make homotypic front-to-back arrays. PB1 domain-mediated heterodimerization in NADPH oxidase and signaling complexes of atypical protein kinase C with Par6 and p62.,Wilson MI, Gill DJ, Perisic O, Quinn MT, Williams RL Mol Cell. 2003 Jul;12(1):39-50. PMID:12887891 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also NADPH oxidase 3D structures

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