4lji

Crystal structure at 1.5 angstrom resolution of the PsbV2 cytochrome from the cyanobacterium thermosynechococcus elongatus

spinqualitylabelsall models 4lji, resolution 1.51Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4lji is a 2 chain structure with sequence from Thermosynechococcus elongatus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL, HEM Resources: FirstGlance, OCA, RCSB, PDBsum Function [PSBV2_THEEB] Can partially replace cytochrome c-550 (PsbV) function.[HAMAP-Rule:MF_01378] Publication Abstract from PubMed PsbV2 is a c-type cytochrome present in a very low abundance in the thermophilic cyanobacterium Thermosynechococcus elongatus. We purified this cytochrome and solved its crystal structure at a resolution of 1.5A. The protein existed as a dimer in the crystal, and has an overall structure similar to other c-type cytochromes like Cytc6 and Cytc550, for example. However, the 5th and 6th heme iron axial ligands were found to be His51 and Cys101, respectively, in contrast to the more common bis-His or His/Met ligands found in most cytochromes. Although a few other c-type cytochromes were suggested to have this axial coordination, this is the first crystal structure reported for a c-type heme with this unusual His/Cys axial coordination. Previous spectroscopic characterizations of PsbV2 are discussed in relation to its structural properties. Crystal structure at 1.5A resolution of the PsbV2 cytochrome from the cyanobacterium Thermosynechococcus elongatus.,Suga M, Lai TL, Sugiura M, Shen JR, Boussac A FEBS Lett. 2013 Oct 1;587(19):3267-72. doi: 10.1016/j.febslet.2013.08.023. Epub, 2013 Aug 29. PMID:23994160 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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