4rm4

The crystal structure of the versatile cytochrome P450 enzyme CYP109B1 from Bacillus subtilis

spinqualitylabelsall models 4rm4, resolution 1.77Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4rm4 is a 1 chain structure with sequence from Bacillus subtilis subsp. subtilis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.771Å Ligands: HEM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function YJIB_BACSU Publication Abstract from PubMed The crystal structure of the versatile CYP109B1 enzyme from Bacillus subtilis has been solved at 1.8 A resolution. This is the first structure of an enzyme from this CYP family, whose members are prevalent across diverse species of bacteria. In the crystal structure the enzyme has an open conformation with an access channel leading from the heme to the surface. The substrate-free structure reveals the location of the key residues in the active site that are responsible for binding the substrate in the correct orientation for regioselective oxidation. Importantly, there are significant differences among these residues in members of the CYP109 and closely related CYP106 families and these likely account for the variations in substrate binding and oxidation profiles observed with these enzymes. A whole-cell oxidation biosystem was developed, which contains CYP109B1 and a phthalate family oxygenase reductase (PFOR), from Pseudomonas putida KT24440, as the electron transfer partner. This electron transfer system is able to support CYP109B1 activity resulting in the regioselective hydroxylation of both alpha- and beta-ionone in vivo and in vitro. The PFOR is therefore a versatile electron transfer partner that is able to support the activity of CYP enzymes from other bacterium. The crystal structure of CYP109B1 has a positively charged proximal face and this explains why it can interact with PFOR and adrenodoxin which are predominantly negatively charged around their [2Fe-2S] clusters. The crystal structure of the versatile cytochrome P450 enzyme CYP109B1 from Bacillus subtilis.,Zhang A, Zhang T, Hall EA, Hutchinson S, Cryle MJ, Wong LL, Zhou W, Bell SG Mol Biosyst. 2015 Jan 14. PMID:25587700 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cytochrome P450 3D structures

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