1fxd

REFINED CRYSTAL STRUCTURE OF FERREDOXIN II FROM DESULFOVIBRIO GIGAS AT 1.7 ANGSTROMS

spinqualitylabelsall models 1fxd, resolution 1.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1fxd is a 1 chain structure with sequence from Atcc 19364. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: F3S NonStd Res: SCH Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [FER_DESGI] Ferredoxins are iron-sulfur proteins that transfer electrons in a wide variety of metabolic reactions. 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 The crystal structure of ferredoxin II from Desulfovibrio gigas has been determined using phasing from anomalous scattering data at a resolution of 1.7 A and refined to an R-factor of 0.157. The molecule has an overall chain fold similar to that of the other bacterial ferredoxins of known structure. The molecule contains a single 3Fe-4S cluster with geometry indistinguishable from the 4Fe-4S clusters, and a disulfide bond near the site corresponding to the position of the second cluster of two-cluster ferredoxins. The cluster is bound by cysteine residues 8, 14 and 50. The side-chain of cysteine 11 extends away from the cluster, but could rotate to become the fourth cysteine ligand in the four-iron form of the molecule given a local adjustment of the polypeptide chain. This residue is modified, however, by what appears to be a methanethiol group. There are a total of eight NH . . . S bonds to the inorganic and cysteine sulfur atoms of the Fe-S cluster. There is an additional residue found that is not reported for the chemical sequence: according to the electron density a valine residue should be inserted after residue 55. Refined crystal structure of ferredoxin II from Desulfovibrio gigas at 1.7 A.,Kissinger CR, Sieker LC, Adman ET, Jensen LH J Mol Biol. 1991 Jun 20;219(4):693-715. PMID:2056535 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ferredoxin 3D structures

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