title: Crystallization and preliminary crystallographic characterization of bacteriophage T4 baseplate protein encoded by gene 9.
abstract: The structural protein, gene product 9 (gp9), of bacteriophage T4 controls baseplate expansion at the first steps of virus attachment onto its host bacterial cell with subsequent tail contraction. Gp9, which has an M(r) of 30.8 kDa and contains 287 amino acids, has been purified from a recombinant Escherichia coli strain and crystallized at 25 degrees C using the hanging drop vapor diffusion method at pH 4.0 with ammonium sulfate as precipitant. The crystals of gp9 belong to the space group R32 with hexagonal cell dimensions a = b = 86.5 A and c = 156.2 A and diffract X-rays to at least 2.7 A. There is one molecule per asymmetric unit.
authors.affiliation: Ivanovsky Institute of Virology, Moscow, Russia.
authors.forename: S V
authors.initials: SV
authors.lastname: Strelkov
authors.forename: T G
authors.initials: TG
authors.lastname: Zurabishvili
authors.forename: I V
authors.initials: IV
authors.lastname: Nepluev
authors.forename: V P
authors.initials: VP
authors.lastname: Efimov
authors.forename: M N
authors.initials: MN
authors.lastname: Isupov
authors.forename: E H
authors.initials: EH
authors.lastname: Harutyunyan
authors.forename: V V
authors.initials: VV
authors.lastname: Mesyanzhinov
mesh_terms: D017122:Bacteriophage T4 / Q000737:chemistry* / Q000235:genetics; D003460:Crystallization; D018360:Crystallography, X-Ray; D005814:Genes, Viral; D014764:Viral Proteins / Q000737:chemistry* / Q000235:genetics
chemical_list: D014764:Viral Proteins; C071681:gene 9 protein, Enterobacteria phage T4