title: Crystallization and preliminary X-ray diffraction analysis of the Bacillus subtilis replication termination protein in complex with the 37-base-pair TerI-binding site.
abstract: The replication terminator protein (RTP) of Bacillus subtilis binds to specific DNA sequences that halt the progression of the replisome in a polar manner. These terminator complexes flank a defined region of the chromosome into which they allow replication forks to enter but not exit. Forcing the fusion of replication forks in a specific zone is thought to allow the coordination of post-replicative processes. The functional terminator complex comprises two homodimers each of 29 kDa bound to overlapping binding sites. A preparation of RTP and a 37-base-pair TerI sequence (comprising two binding sites for RTP) has been purified and crystallized. A data set to 3.9 A resolution with 97.0% completeness and an R(sym) of 12% was collected from a single flash-cooled crystal using synchrotron radiation. The diffraction data are consistent with space group P622, with unit-cell parameters a = b = 118.8, c = 142.6 A.
authors.affiliation: School of Medicine and Pharmacology, University of Western Australia, Crawley, WA 6009, Australia.
authors.forename: J P
authors.initials: JP
authors.lastname: Vivian
authors.forename: C
authors.initials: C
authors.lastname: Porter
authors.forename: J A
authors.initials: JA
authors.lastname: Wilce
authors.forename: M C J
authors.initials: MC
authors.lastname: Wilce
mesh_terms: D001412:Bacillus subtilis / Q000737:chemistry* / Q000235:genetics; D001426:Bacterial Proteins / Q000737:chemistry* / Q000302:isolation & purification; D020029:Base Pairing; D001665:Binding Sites; D003460:Crystallization; D004269:DNA, Bacterial / Q000737:chemistry* / Q000235:genetics; D004268:DNA-Binding Proteins / Q000737:chemistry* / Q000302:isolation & purification; D016297:Mutagenesis, Site-Directed; D011994:Recombinant Proteins / Q000737:chemistry; D013728:Terminator Regions, Genetic; D014961:X-Ray Diffraction
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D004268:DNA-Binding Proteins; D011994:Recombinant Proteins; C063112:rtP protein, Bacillus subtilis