1cpt
CRYSTAL STRUCTURE AND REFINEMENT OF CYTOCHROME P450-TERP AT 2.3 ANGSTROMS RESOLUTIONCRYSTAL STRUCTURE AND REFINEMENT OF CYTOCHROME P450-TERP AT 2.3 ANGSTROMS RESOLUTION
Structural highlights
Function[CPXL_PSESP] Catalyzes the hydroxylation of alpha-terpineol. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedCytochrome P450terp is a class I (mitochondrial/bacterial) P450 that catalyzes the hydroxylation of alpha-terpineol as part of the catabolic assimilation of this compound by a pseudomonad species. Crystals grown from the purified protein have the symmetry of space group P6(1)22, and cell dimensions a = b = 69.4 A, c = 456.6 A, alpha = beta = 90 degrees, gamma = 120 degrees. Diffraction data were collected at the Cornell High Energy Synchrotron Source, and the structure of P450terp was solved by a combination of molecular replacement and multiple isomorphous replacement techniques. A model of P450terp was built and refined against native data, to an R-factor of 18.9% for data with I > or = sigma(I) between 6.0 A and 2.3 A resolution. This model contains 412 of the 428 P450terp amino acid residues; the loop between helices F and G is disordered in the crystal. While the overall fold of P450terp is very similar to that of P450cam, only three-quarters of the C alpha positions can be superimposed, to a root-mean-square deviation of only 1.87 A. The mode of substrate binding by P450terp can be predicted, and probable substrate contact residues identified. The heme environment and side-chain positions in the adjacent I-helix suggest possible modes of proton delivery in the catalytic cycle of the enzyme. Crystal structure and refinement of cytochrome P450terp at 2.3 A resolution.,Hasemann CA, Ravichandran KG, Peterson JA, Deisenhofer J J Mol Biol. 1994 Mar 4;236(4):1169-85. PMID:8120894[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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