Reference: Qiu H, et al. (1993) The Saccharomyces cerevisiae DNA repair gene RAD25 is required for transcription by RNA polymerase II. Genes Dev 7(11):2161-71

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Abstract

The RAD25 gene of Saccharomyces cerevisiae is required for excision repair of ultraviolet-damaged DNA and, in addition, is essential for viability. RAD25 shares a high degree of homology with the human ERCC3/XPBC-encoded protein, and the yeast and human proteins resemble one another in containing the conserved ATPase/DNA helicase sequence motifs. To determine the nature of the essential role of RAD25, we have isolated a recessive temperature-sensitive conditional lethal mutation of the gene and have examined its effect on transcription. Upon shift to the nonpermissive temperature, the rad25 temperature-sensitive (ts) mutant stops growth rapidly and shows a large decrease in the synthesis of poly(A)+ RNA. Transcription of a large number of yeast genes, including HIS3, TRP3, STE2, MET19, RAD23, CDC9, and ACT1 is inhibited at the restrictive temperature in the rad25 ts mutant, and the galactose-inducible synthesis of GAL7 and GAL10 mRNAs is also severely affected by the loss of RAD25 activity. These findings implicate a general requirement of RAD25 in RNA polymerase II transcription.

Reference Type
Journal Article | Research Support, U.S. Gov't, Non-P.H.S. | Research Support, U.S. Gov't, P.H.S. | Comparative Study
Authors
Qiu H, Park E, Prakash L, Prakash S
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