Cubic crystals of chloramphenicol phosphotransferase from Streptomyces venezuelae in complex with chloramphenicol.

Autor: Ellis J; Department of Biochemistry, University of Leicester, Leicester LE1 7RH, England., Campopiano DJ, Izard T
Jazyk: angličtina
Zdroj: Acta crystallographica. Section D, Biological crystallography [Acta Crystallogr D Biol Crystallogr] 1999 May; Vol. 55 (Pt 5), pp. 1086-8.
DOI: 10.1107/s0907444999003029
Abstrakt: Chloramphenicol 3-O-phosphotransferase (CPT) from Streptomyces venezuelae ISP5230, a novel chloramphenicol-inactivating kinase, has been overexpressed and purified using Escherichia coli as the heterologous host. Crystals of CPT in complex with its substrate chloramphenicol (Cm) were obtained which were suitable for X-ray diffraction. The crystals belong to the cubic space group I4132 with unit-cell dimension a = 200.0 A. The initial CPT crystals diffracted to 3.5 A and the diffraction was improved significantly upon adding acetonitrile and Cm to the crystallization drop. The CPT-Cm crystals diffract to at least 2.8 A resolution.
Databáze: MEDLINE