1it1

Solution structures of ferrocytochrome c3 from Desulfovibrio vulgaris Miyazaki FSolution structures of ferrocytochrome c3 from Desulfovibrio vulgaris Miyazaki F

Structural highlights 1it1 is a 1 chain structure with sequence from Desulfovibrio vulgaris str. 'Miyazaki F'. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Ligands: Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CYC3_DESVM Participates in sulfate respiration coupled with phosphorylation by transferring electrons from the enzyme dehydrogenase to ferredoxin. 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 Heteronuclear NMR spectroscopy was performed to determine the solution structure of (15)N-labeled ferrocytochrome c(3) from Desulfovibrio vulgaris Miyazaki F (DvMF). Although the folding of the reduced cytochrome c(3) in solution was similar to that of the oxidized one in the crystal structure, the region involving hemes 1 and 2 was different. The redox-coupled conformational change is consistent with the reported solution structure of D. vulgaris Hildenborough ferrocytochrome c(3), but is different from those of other cytochromes c(3). The former is homologous with DvMF cytochrome c(3) in amino acid sequence. Small displacements of hemes 1 and 2 relative to hemes 3 and 4 were observed. This observation is consistent with the unusual behavior of the 2(1)CH(3) signal of heme 3 reported previously. As shown by the (15)N relaxation parameters of the backbone, a region between hemes 1 and 2 has more flexibility than the other regions. The results of this work strongly suggest that the cooperative reduction of hemes 1 and 2 is based on the conformational changes of the C-13 propionate of heme 1 and the aromatic ring of Tyr43, and the interaction between His34 and His 35 through covalent and coordination bonds. Redox-coupled conformational alternations in cytochrome c(3) from D. vulgaris Miyazaki F on the basis of its reduced solution structure.,Harada E, Fukuoka Y, Ohmura T, Fukunishi A, Kawai G, Fujiwara T, Akutsu H J Mol Biol. 2002 Jun 7;319(3):767-78. PMID:12054869 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome C 3D structures

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