title: Structure of a replication-terminator protein complexed with DNA.
abstract: The crystal structure of the Escherichia coli replication-terminator protein (Tus) bound to terminus-site (Ter) DNA has been determined at 2.7 A resolution. The Tus protein folds into a previously undescribed architecture divided into two domains by a central basic cleft. This cleft accommodates locally deformed B-form Ter DNA and makes extensive contacts with the major groove, mainly through two interdomain beta-strands. The unusual structural features of this complex may explain how the replication fork is halted in only one direction.
authors.affiliation: Department of Genetics, The Graduate University for Advanced Studies, and National Institute of Genetics, Shizuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kamada
authors.forename: T
authors.initials: T
authors.lastname: Horiuchi
authors.forename: K
authors.initials: K
authors.lastname: Ohsumi
authors.forename: N
authors.initials: N
authors.lastname: Shimamoto
authors.forename: K
authors.initials: K
authors.lastname: Morikawa
mesh_terms: D000595:Amino Acid Sequence; D001412:Bacillus subtilis / Q000737:chemistry; D001426:Bacterial Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D018360:Crystallography, X-Ray; D004261:DNA Replication; D004269:DNA, Bacterial / Q000096:biosynthesis / Q000737:chemistry* / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000737:chemistry* / Q000378:metabolism; D004926:Escherichia coli / Q000737:chemistry; D029968:Escherichia coli Proteins; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009154:Mutation; D009690:Nucleic Acid Conformation; D011485:Protein Binding; D011487:Protein Conformation
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D004268:DNA-Binding Proteins; D029968:Escherichia coli Proteins; C061910:tus protein, Bacteria; C489236:tus protein, E coli