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. 1975 May;72(5):1725–1728. doi: 10.1073/pnas.72.5.1725

Transcription termination factor rho activity is altered in Escherichia coli with suA gene mutations.

J P Richardson, C Grimley, C Lowery
PMCID: PMC432618  PMID: 1098042

Abstract

Rho factor has been purified from a strain of E. coli containing the Su78 mutation in the suA gene and assayed in another strain with an amber mutation in the suA gene. The rho from the Su78 mutant strain is present in normal amounts but has altered termination function; it does not terminate transcription at some sites that are recognized effectively by the rho factor from the isogenic wild-type strain. Rho in cells with an amber mutation in the suA gene has been assayed by its RNA-dependent ATPase activity. Extracts of cells of this strain have only 9% as much of this rho activity as extracts of cells of the isogenic wild-type strain. These results suggest that rho is the product of the suA gene. Since mutations in the suA gene are known to decrease polar effects of mutations in other genes, it is also suggested that rho factor is at least partially responsible for polar effects.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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