title: Structural relationship of bacterial RecA proteins to recombination proteins from bacteriophage T4 and yeast.
abstract: RecA protein is essential in eubacteria for homologous recombination and promotes the homologous pairing and strand exchange of DNA molecules in vitro. Recombination proteins with weak sequence similarity to bacterial RecA proteins have been identified in bacteriophage T4, yeast, and other higher organisms. Analysis of the primary sequence relationships of DMC1 from Saccharomyces cerevisiae and UvsX of T4 relative to the three-dimensional structure of RecA from Escherichia coli suggests that both proteins are structural homologs of bacterial RecA proteins. This analysis argues that proteins in this group are members of a single family that diverged from a common ancestor that existed prior to the divergence of prokaryotes and eukaryotes.
authors.affiliation: Department of Molecular Biophysics, Yale University, New Haven, CT 06511.
authors.forename: R M
authors.initials: RM
authors.lastname: Story
authors.forename: D K
authors.initials: DK
authors.lastname: Bishop
authors.forename: N
authors.initials: N
authors.lastname: Kleckner
authors.forename: T A
authors.initials: TA
authors.lastname: Steitz
mesh_terms: D000251:Adenosine Triphosphatases / Q000737:chemistry / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000378:metabolism; D000595:Amino Acid Sequence; D001665:Binding Sites; D018797:Cell Cycle Proteins; D017124:Conserved Sequence; D004247:DNA / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000378:metabolism; D004926:Escherichia coli / Q000737:chemistry; D005656:Fungal Proteins / Q000737:chemistry / Q000378:metabolism; D008565:Membrane Proteins / Q000378:metabolism; D008958:Models, Molecular; D008969:Molecular Sequence Data; D015394:Molecular Structure; D017433:Protein Structure, Secondary; D011938:Rec A Recombinases / Q000737:chemistry* / Q000378:metabolism; D011994:Recombinant Proteins / Q000737:chemistry; D012441:Saccharomyces cerevisiae / Q000737:chemistry*; D029701:Saccharomyces cerevisiae Proteins; D017386:Sequence Homology, Amino Acid; D013604:T-Phages / Q000737:chemistry*; D014764:Viral Proteins / Q000378:metabolism
chemical_list: D018797:Cell Cycle Proteins; C513033:DMC1 protein, S cerevisiae; D004268:DNA-Binding Proteins; D005656:Fungal Proteins; D008565:Membrane Proteins; D011994:Recombinant Proteins; D029701:Saccharomyces cerevisiae Proteins; C092863:UvsX protein, Enterobacteria phage T4; D014764:Viral Proteins; D000255:Adenosine Triphosphate; D004247:DNA; D011938:Rec A Recombinases; D000251:Adenosine Triphosphatases