Article
Functional complementation between mutations at two distant positions in Escherichia coli RNA polymerase as revealed by second-site suppression.
Molecular & general genetics : MGG - 1 Jan 2001
Sujatha S, Ishihama A, Chatterji D
Abstract excerpt
Subunit-subunit interactions are critical for the assembly of the core of Escherichia coli RNA polymerase. The mutant alpha-subunit C131A is unable to complement the temperature-sensitive alpha-R45C mutant strain, which is defective for binding of the beta-subunit. In vitro reconstitution experiments, however, indicate that the alpha-C131A variant is able to form the intermediate alpha2beta, but is defective in...
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