title: Expression, purification and preliminary crystallographic characterization of FlhF from Bacillus subtilis.
abstract: The gram-positive bacterium Bacillus subtilis contains three proteins belonging to the signal recognition particle (SRP) type GTPase family. The well characterized signal sequence-binding protein SRP54 and the SRP receptor protein FtsY are universally conserved components of the SRP system of protein transport. The third member, FlhF, has been implicated in the placement and assembly of polar flagella. This article describes the overexpression and preliminary X-ray crystallographic analysis of an FlhF fragment that corresponds to the well characterized GTPase domains in SRP54 and FtsY. Three crystal forms are reported with either GDP or GMPPNP and diffract to a resolution of about 3 A.
authors.affiliation: Heidelberg University Biochemistry Centre (BZH), INF 328, 69120 Heidelberg, Germany.
authors.forename: Gert
authors.initials: G
authors.lastname: Bange
authors.forename: Georg
authors.initials: G
authors.lastname: Petzold
authors.forename: Klemens
authors.initials: K
authors.lastname: Wild
authors.forename: Irmgard
authors.initials: I
authors.lastname: Sinning
mesh_terms: D001412:Bacillus subtilis / Q000737:chemistry*; D001426:Bacterial Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D020559:Monomeric GTP-Binding Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D011487:Protein Conformation
chemical_list: D001426:Bacterial Proteins; C078317:flhF protein, Bacteria; D020559:Monomeric GTP-Binding Proteins