title: Cloning, purification and crystallization of Bacillus anthracis class C acid phosphatase.
abstract: Cloning, expression, purification and crystallization studies of a recombinant class C acid phosphatase from the Category A pathogen Bacillus anthracis are reported. Large diffraction-quality crystals were grown in the presence of HEPES and Jeffamine ED-2001 at pH 7.0. The crystals belong to space group P2(1)2(1)2(1), with unit-cell parameters a = 53.4, b = 90.1, c = 104.2 angstroms. The asymmetric unit is predicted to contain two protein molecules with a solvent content of 38%. Two native data sets were collected from the same crystal before and after flash-annealing. The first data set had a mosaicity of 1.6 degrees and a high-resolution limit of 1.8 angstroms. After flash-annealing, the apparent mosaicity decreased to 0.9 degrees and the high-resolution limit of usable data increased to 1.6 angstroms. This crystal form is currently being used to determine the structure of B. anthracis class C acid phosphatase with experimental phasing techniques.
authors.affiliation: Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: Richard L
authors.initials: RL
authors.lastname: Felts
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Reilly
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Calcutt
authors.forename: John J
authors.initials: JJ
authors.lastname: Tanner
mesh_terms: D000135:Acid Phosphatase / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification*; D001408:Bacillus anthracis / Q000201:enzymology*; D001426:Bacterial Proteins / Q000737:chemistry / Q000302:isolation & purification; D003001:Cloning, Molecular; D003460:Crystallization; D011487:Protein Conformation; D011994:Recombinant Proteins / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D001426:Bacterial Proteins; D011994:Recombinant Proteins; D000135:Acid Phosphatase