Overproduction, purification, crystallization and preliminary X-ray diffraction analysis of Trypanosoma brucei gambiense glycerol kinase

Acta Crystallogr Sect F Struct Biol Cryst Commun. 2010 Mar 1;66(Pt 3):304-8. doi: 10.1107/S1744309110000369. Epub 2010 Feb 24.

Abstract

In the bloodstream forms of human trypanosomes, glycerol kinase (GK; EC 2.7.1.30) is one of the nine glycosomally compartmentalized enzymes that are essential for energy metabolism. In this study, a recombinant Trypanosoma brucei gambiense GK (rTbgGK) with an N-terminal cleavable His(6) tag was overexpressed, purified to homogeneity and crystallized by the sitting-drop vapour-diffusion method using PEG 400 as a precipitant. A complete X-ray diffraction data set to 2.75 A resolution indicated that the crystals belonged to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 63.84, b = 121.50, c = 154.59 A. The presence of two rTbgGK molecules in the asymmetric unit gives a Matthews coefficient (V(M)) of 2.5 A(3) Da(-1), corresponding to 50% solvent content.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chromatography, Affinity
  • Chromatography, Gel
  • Crystallization
  • Crystallography, X-Ray
  • Glycerol Kinase / chemistry*
  • Glycerol Kinase / isolation & purification
  • Trypanosoma brucei gambiense / enzymology*

Substances

  • Glycerol Kinase