2dge | pdb_00002dge

Crystal structure of oxidized cytochrome C6A from Arabidopsis thaliana

spinqualitylabelsall models 2dge, resolution 1.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2dge is a 4 chain structure with sequence from Arabidopsis thaliana. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: HEM, ZN Gene: ATC6 (Arabidopsis thaliana) Resources: FirstGlance, OCA, RCSB, PDBsum 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 Compared with algal and cyanobacterial cytochrome c(6), cytochrome c(6A) from higher plants contains an additional loop of 12 amino acid residues. We have determined the first crystal structure of cytochrome c(6A) from Arabidopsis thaliana at 1.5 Angstrom resolution in order to help elucidate its function. The overall structure of cytochrome c(6A) follows the topology of class I c-type cytochromes in which the heme prosthetic group covalently binds to Cys16 and Cys19, and the iron has octahedral coordination with His20 and Met60 as the axial ligands. Two cysteine residues (Cys67 and Cys73) within the characteristic 12 amino acids loop form a disulfide bond, contributing to the structural stability of cytochrome c(6A). Our model provides a chemical basis for the known low redox potential of cytochrome c(6A) which makes it an unsuitable electron carrier between cytochrome b(6)f and PSI. Crystal structure of oxidized cytochrome c(6A) from Arabidopsis thaliana.,Chida H, Yokoyama T, Kawai F, Nakazawa A, Akazaki H, Takayama Y, Hirano T, Suruga K, Satoh T, Yamada S, Kawachi R, Unzai S, Nishio T, Park SY, Oku T FEBS Lett. 2006 Jun 26;580(15):3763-8. Epub 2006 Jun 9. PMID:16777100 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome c

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