1a2s

THE SOLUTION NMR STRUCTURE OF OXIDIZED CYTOCHROME C6 FROM THE GREEN ALGA MONORAPHIDIUM BRAUNII, MINIMIZED AVERAGE STRUCTURE

spinqualitylabelsall models 1a2s, 1 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1a2s is a 1 chain structure with sequence from Monoraphidium braunii. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: HEC Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [CYC6_CHLBR] Functions as an electron carrier between membrane-bound cytochrome b6-f and photosystem I in oxygenic photosynthesis. 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 Cytochrome c6 from Monoraphidium braunii, an 89-amino acid electron transfer protein, has been investigated by NMR in solution, in its oxidized form, at pH 7 and 300 K. By using a combination of COSY, TOCSY, and NOESY experiments, 84% of the proton resonances have been assigned. A total of 1668 experimental NOE constraints, 1109 of which were meaningful, together with 288 pseudocontact shifts, have been used to determine the structure in solution. This is represented as a family of 40 structures which have been energy minimized. The rmsd values with respect to the mean structure are 0.57 +/- 0.08 and 0.94 +/- 0.09 A for the backbone and heavy atoms, respectively. The structure has been found to be very similar to that of the reduced form, except for a rearrangement in propionate 7, a feature which has been observed in all c-type cytochromes investigated so far. Such a feature could be relevant for the efficiency of the electron transfer pathway with either the oxidizing or the reducing partners. Other differences in the oxidation states have been noted in the region proposed to be involved in the interaction with the physiological partners. Solution structure of oxidized cytochrome c6 from the green alga Monoraphidium braunii.,Banci L, Bertini I, De la Rosa MA, Koulougliotis D, Navarro JA, Walter O Biochemistry. 1998 Apr 7;37(14):4831-43. PMID:9538000 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome c

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