Structural Relationship of Bacterial RecA Proteins to Recombination Proteins from Bacteriophage T4 and Yeast
- 26 March 1993
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 259 (5103), 1892-1896
- https://doi.org/10.1126/science.8456313
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.Keywords
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