5n1t

Crystal structure of complex between flavocytochrome c and copper chaperone CopC from T. paradoxus

spinqualitylabelsall models 5n1t, resolution 2.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5n1t is a 4 chain structure with sequence from Thioalkalivibrio paradoxus ARh 1. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.6Å Ligands: CSS, CU, FAD, GOL, HEC Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function W0DP88_9GAMM Publication Abstract from PubMed Flavocytochrome c sulfide dehydrogenase from Thioalkalivibrio paradoxus (TpFCC) is a heterodimeric protein consisting of flavin- and monohaem c-binding subunits. TpFCC was co-purified and co-crystallized with the dimeric copper-binding protein TpCopC. The structure of the TpFCC-(TpCopC)2 complex was determined by X-ray diffraction at 2.6 A resolution. The flavin-binding subunit of TpFCC is structurally similar to those determined previously, and the structure of the haem-binding subunit is similar to that of the N-terminal domain of dihaem FCCs. According to classification based on amino-acid sequence, TpCopC belongs to a high-affinity CopC subfamily characterized by the presence of a conserved His1-Xxx-His3 motif at the N-terminus. Apparently, a unique alpha-helix which is present in each monomer of TpCopC at the interface with TpFCC plays a key role in complex formation. The structure of the copper-binding site in TpCopC is similar to those in other known CopC structures. His3 is not involved in binding to the copper ion and is 6-7 A away from this ion. Therefore, the His1-Xxx-His3 motif cannot be considered to be a key factor in the high affinity of CopC for copper(II) ions. It is suggested that the TpFCC-(TpCopC)2 heterotetramer may be a component of a large periplasmic complex that is responsible for thiocyanate metabolism. Structure of the flavocytochrome c sulfide dehydrogenase associated with the copper-binding protein CopC from the haloalkaliphilic sulfur-oxidizing bacterium Thioalkalivibrio paradoxusARh 1.,Osipov EM, Lilina AV, Tsallagov SI, Safonova TN, Sorokin DY, Tikhonova TV, Popov VO Acta Crystallogr D Struct Biol. 2018 Jul 1;74(Pt 7):632-642. doi:, 10.1107/S2059798318005648. Epub 2018 Jun 8. PMID:29968673 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome C 3D structures

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