5knb | pdb_00005knb

Crystal structure of the 2 ADP-bound V1 complex

spinqualitylabelsall models 5knb, resolution 3.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5knb is a 8 chain structure with sequence from Enterococcus hirae ATCC 9790. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.251Å Ligands: ADP, GOL, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function NTPA_ENTHA Involved in ATP-driven sodium extrusion. Publication Abstract from PubMed V1-ATPases are highly conserved ATP-driven rotary molecular motors found in various membrane systems. We recently reported the crystal structures for the Enterococcus hirae A3B3DF (V1) complex, corresponding to the catalytic dwell state waiting for ATP hydrolysis. Here we present the crystal structures for two other dwell states obtained by soaking nucleotide-free V1 crystals in ADP. In the presence of 20 muM ADP, two ADP molecules bind to two of three binding sites and cooperatively induce conformational changes of the third site to an ATP-binding mode, corresponding to the ATP-binding dwell. In the presence of 2 mM ADP, all nucleotide-binding sites are occupied by ADP to induce conformational changes corresponding to the ADP-release dwell. Based on these and previous findings, we propose a V1-ATPase rotational mechanism model. Crystal structures of the ATP-binding and ADP-release dwells of the V1 rotary motor.,Suzuki K, Mizutani K, Maruyama S, Shimono K, Imai FL, Muneyuki E, Kakinuma Y, Ishizuka-Katsura Y, Shirouzu M, Yokoyama S, Yamato I, Murata T Nat Commun. 2016 Oct 27;7:13235. doi: 10.1038/ncomms13235. PMID:27807367 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also ATPase 3D structures

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