6ldl

Crystal structure of CYP116B46-N(20-445) from Tepidiphilus thermophilus in complex with HEME

spinqualitylabelsall models 6ldl, resolution 1.38Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.38Å Ligands: BCN, GOL, HEM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Cytochrome P450 monooxygenases are versatile heme-thiolate enzymes that catalyze a wide range of reactions. Self-sufficient cytochrome P450 enzymes contain the redox partners in a single polypeptide chain. Here, we present the crystal structure of full-length CYP116B46, a self-sufficient P450. The continuous polypeptide chain comprises three functional domains, which align well with the direction of electrons traveling from FMN to the heme through the [2Fe-2S] cluster. FMN and the [2Fe-2S] cluster are positioned closely, which facilitates efficient electron shuttling. The edge-to-edge straight-line distance between the [2Fe-2S] cluster and heme is approx. 25.3 A. The role of several residues located between the [2Fe-2S] cluster and heme in the catalytic reaction is probed in mutagenesis experiments. These findings not only provide insights into the intramolecular electron transfer of self-sufficient P450s, but are also of interest for biotechnological applications of self-sufficient P450s. Structural insight into the electron transfer pathway of a self-sufficient P450 monooxygenase.,Zhang L, Xie Z, Liu Z, Zhou S, Ma L, Liu W, Huang JW, Ko TP, Li X, Hu Y, Min J, Yu X, Guo RT, Chen CC Nat Commun. 2020 May 29;11(1):2676. doi: 10.1038/s41467-020-16500-5. PMID:32472090 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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