Structural highlights
3e3z 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.
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| Ligands: | , , |
| Related: | 3dze, 3e2j, 3e4g |
| 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.[1] [2]
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[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Belogrudov GI. Factor B is essential for ATP synthesis by mitochondria. Arch Biochem Biophys. 2002 Oct 15;406(2):271-4. PMID:12361715
- ↑ Lee JK, Belogrudov GI, Stroud RM. Crystal structure of bovine mitochondrial factor B at 0.96-A resolution. Proc Natl Acad Sci U S A. 2008 Sep 9;105(36):13379-84. Epub 2008 Sep 3. PMID:18768789
- ↑ Lee JK, Belogrudov GI, Stroud RM. Crystal structure of bovine mitochondrial factor B at 0.96-A resolution. Proc Natl Acad Sci U S A. 2008 Sep 9;105(36):13379-84. Epub 2008 Sep 3. PMID:18768789
