title: Expression, purification, crystallization and preliminary X-ray crystallographic analysis of pantothenate kinase from Mycobacterium tuberculosis.
abstract: Pantothenate kinase is an essential enzyme in the bacterial life cycle. It catalyzes the phosphorylation of pantothenate (vitamin B5) to 4'-phosphopantothenate, the first step in the coenzyme A biosynthetic pathway. The enzyme from Mycobacterium tuberculosis, MW 35.7 kDa, has been cloned, expressed, purified and crystallized in two different trigonal crystal forms, both belonging to space group P3(1)21. Two complete data sets of resolution 2.5 A (form I) and 2.9 A (form II) from crystals with unit-cell parameters a = b = 78.3, c = 115.45 A and a = b = 107.63, c = 89.85 A, respectively, were collected at room temperature on a home X-ray source. Structures of both crystal forms were solved for one subunit in the asymmetric unit by molecular replacement.
authors.affiliation: Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560 012, India.
authors.forename: Satyabrata
authors.initials: S
authors.lastname: Das
authors.forename: Parimal
authors.initials: P
authors.lastname: Kumar
authors.forename: Vikrant
authors.initials: V
authors.lastname: Bhor
authors.forename: A
authors.initials: A
authors.lastname: Surolia
authors.forename: M
authors.initials: M
authors.lastname: Vijayan
mesh_terms: D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification; D001483:Base Sequence; D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D017931:DNA Primers; D004926:Escherichia coli / Q000201:enzymology; D008969:Molecular Sequence Data; D009169:Mycobacterium tuberculosis / Q000201:enzymology*; D017853:Phosphotransferases (Alcohol Group Acceptor) / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D011994:Recombinant Proteins / Q000737:chemistry / Q000302:isolation & purification; D014961:X-Ray Diffraction
chemical_list: D001426:Bacterial Proteins; D017931:DNA Primers; D011994:Recombinant Proteins; D017853:Phosphotransferases (Alcohol Group Acceptor); C023088:pantothenate kinase