3e4g

Crystal structure of bovine coupling Factor B, G28E mutant

spinqualitylabelsall models 3e4g, resolution 0.96Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3e4g is a 1 chain structure with sequence from Bovin. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MG, TRS Related: 3dze, 3e2j, 3e3z Gene: ATP5S, ATPW (BOVIN) Activity: H(+)-transporting two-sector ATPase, with EC number 3.6.3.14 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [ATP5S_BOVIN] Involved in regulation of mitochondrial membrane ATP synthase. Necessary for H(+) conduction of ATP synthase. Facilitates energy-driven catalysis of ATP synthesis by blocking a proton leak through an alternative proton exit pathway. 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 Coupling factor B (FB) is a mitochondrial inner membrane polypeptide that facilitates the energy-driven catalysis of ATP synthesis in animal mitochondria by blocking a proton leak across the membrane. Here, we report the crystal structure of the bovine mitochondrial FB mutant with Gly-3-Glu substitution determined at a resolution of 0.96 A and that of the WT polypeptide at a resolution of 2.9 A. The structure reveals an oblong, oval-shaped molecule with a unique globular N-terminal domain that is proposed to be the membrane anchor domain and the capping region to the C-terminal leucine-rich repeats domain. A short N-terminal alpha-helix, which extends away from the molecule's body, is suggestive of functioning as an anchor for FB to the matrix side of the mitochondrial inner membrane. Identification of a bound Mg(2+) ion reveals that FB is a metalloprotein. We also report the cocrystal structures of FB bound with phenylarsine oxide and Cd(2+), two known inhibitors of the FB coupling activity. Crystal structure of bovine mitochondrial factor B at 0.96-A resolution.,Lee JK, Belogrudov GI, Stroud RM Proc Natl Acad Sci U S A. 2008 Sep 9;105(36):13379-84. Epub 2008 Sep 3. PMID:18768789 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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