1ue8
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(New page: 200px<br /><applet load="1ue8" size="450" color="white" frame="true" align="right" spinBox="true" caption="1ue8, resolution 3.00Å" /> '''Crystal Structure of...)
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Revision as of 01:43, 25 November 2007
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Crystal Structure of Thermophilic Cytochrome P450 from Sulfolobus tokodaii
Overview
Cytochrome P450 from thermoacidophilic crenarchaeon, Sulfolobus tokodaii, strain 7 (P450st) has been expressed in Escherichia coli and purified at, high homogeneity. P450st was crystallized in an orthorhombic system with, the space group P2(1)2(1)2(1) and cell dimensions of a=53.6 A, b=55.1 A, and c=130.9 A, and the structure was determined at a 3.0 A resolution. The, final R-factor was 0.194 (Rfree=0.235). Structural comparison with, cytochrome P450 from S. solfataricus (CYP119) suggests that the region, composed of the F to G helices and the Cl- binding site is responsible for, the affinity for a ligand coordinating heme iron. Direct electrochemistry, of P450st in a didodecyldimethylammonium bromide (DDAB) film on a plastic, formed carbon (PFC) electrode has also been demonstrated. A, quasi-reversible redox response has been observed even at elevated, temperatures of up to 80 degrees C.
About this Structure
1UE8 is a Single protein structure of sequence from Sulfolobus tokodaii with CL and HEM as ligands. Full crystallographic information is available from OCA.
Reference
Structure and direct electrochemistry of cytochrome P450 from the thermoacidophilic crenarchaeon, Sulfolobus tokodaii strain 7., Oku Y, Ohtaki A, Kamitori S, Nakamura N, Yohda M, Ohno H, Kawarabayasi Y, J Inorg Biochem. 2004 Jul;98(7):1194-9. PMID:15219985
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