title: Crystallization and preliminary crystallographic studies of Sfp: a phosphopantetheinyl transferase of modular peptide synthetases.
abstract: The Bacillus subtilis Sfp protein is required for the non-ribosomal biosynthesis of the lipoheptapeptide antibiotic surfactin. It converts seven peptidyl carrier protein (PCP) domains of the surfactin synthetase SfrA-(A-C) to their active holo-forms by 4'-phosphopantetheinylation. The B. subtilis sfp gene was overexpressed in Escherichia coli and its gene product was purified to homogeneity and crystallized. Well diffracting single crystals were obtained from Sfp as well as from a selenomethionyl derivative, using sodium formate as a precipitant. The crystals belong to the tetragonal space group P41212/P43212, with unit-cell parameters a = b = 65.3, c = 150.5 A. They diffract beyond 2.8 A and contain one molecule in the asymmetric unit.
authors.affiliation: Institut für Biochemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 2, 35043 Marburg, Germany.
authors.forename: M R
authors.initials: MR
authors.lastname: Mofid
authors.forename: M A
authors.initials: MA
authors.lastname: Marahiel
authors.forename: R
authors.initials: R
authors.lastname: Ficner
authors.forename: K
authors.initials: K
authors.lastname: Reuter
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology; D001426:Bacterial Proteins / Q000737:chemistry*; D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D004926:Escherichia coli / Q000235:genetics; D055666:Lipopeptides; D010453:Peptide Synthases / Q000737:chemistry*; D010456:Peptides, Cyclic; D017855:Transferases (Other Substituted Phosphate Groups) / Q000096:biosynthesis / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification
chemical_list: D001426:Bacterial Proteins; D055666:Lipopeptides; D010456:Peptides, Cyclic; C082662:phosphopantetheinyl transferase; C009365:surfactin peptide; D017855:Transferases (Other Substituted Phosphate Groups); D010453:Peptide Synthases; C069542:surfactin synthetase