3ofu

Crystal Structure of Cytochrome P450 CYP101C1

spinqualitylabelsall models 3ofu, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3ofu is a 6 chain structure with sequence from Novosphingobium aromaticivorans DSM 12444. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Ligands: HEM, ID3 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q2G637_NOVAD Publication Abstract from PubMed CYP101C1 from Novosphingobium aromaticivorans DSM12444 is a homologue of CYP101D1 and CYP101D2 enzymes from the same bacterium and CYP101A1 from Pseudomonas putida. CYP101C1 does not bind camphor but is capable of binding and hydroxylating ionone derivatives including alpha- and beta-ionone and beta-damascone. The activity of CYP101C1 was highest with beta-damascone (k(cat)=86 s(-1)) but alpha-ionone oxidation was the most regioselective (98 % at C3). The crystal structures of hexane-2,5-diol- and beta-ionone-bound CYP101C1 have been solved; both have open conformations and the hexanediol-bound form has a clear access channel from the heme to the bulk solvent. The entrance of this channel is blocked when beta-ionone binds to the enzyme. The heme moiety of CYP101C1 is in a significantly different environment compared to the other structurally characterised CYP101 enzymes. The likely ferredoxin binding site on the proximal face of CYP101C1 has a different topology but a similar overall positive charge compared to CYP101D1 and CYP101D2, all of which accept electrons from the ArR/Arx class I electron transfer system. Structural Analysis of CYP101C1 from Novosphingobium aromaticivorans DSM12444.,Ma M, Bell SG, Yang W, Hao Y, Rees NH, Bartlam M, Zhou W, Wong LL, Rao Z Chembiochem. 2011 Jan 3;12(1):88-99. PMID:21154803 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome P450 3D structures

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