Plasmodium falciparum Rab6 GTPase: Expression, purification, crystallization and preliminary crystallographic studies

Academic Article

Abstract

  • The Plasmodium falciparum rab6 gene encodes a 208 amino-acid polypeptide. Two recombinant versions of P. falciparum Rab6 protein were expressed in Escherichia coli: the full-length protein and a truncated form containing residues 1-175. Both forms were purified from the soluble fraction of bacterial extract and were purified by ion-exchange chromatography and size-exclusion chromatography. Purified proteins were crystallized at pH 6.5 using the hanging-drop vapor-diffusion technique at room temperature. The full-length protein diffracted to 2.4 Å and belongs to the tetragonal space group P43212 or P41212, with unit-cell parameters a = b = 80.6, c = 90.4 Å. The crystals of the truncated protein were isomorphous with those of the full-length construct and diffracted X-rays to 2.2 Å resolution.
  • Digital Object Identifier (doi)

    Pubmed Id

  • 2264008
  • Author List

  • Chattopadhyay D; Smith CD; Barchue J; Langsley G
  • Start Page

  • 1017
  • End Page

  • 1019
  • Volume

  • 56
  • Issue

  • 8