Roles of RAD6 epistasis group members in spontaneous polzeta-dependent translesion synthesis in Saccharomyces cerevisiae.

@article{citeulike:2862647, abstract = {DNA lesions that arise during normal cellular metabolism can block the progress of replicative DNA polymerases, leading to cell cycle arrest and, in higher eukaryotes, apoptosis. Alternatively, such blocking lesions can be temporarily tolerated using either a recombination- or a translesion synthesis-based bypass mechanism. In Saccharomyces cerevisiae, members of the RAD6 epistasis group are key players in the regulation of lesion bypass by the translesion DNA polymerase Polzeta. In this study, changes in the reversion rate and spectrum of the lys2DeltaA746 -1 frameshift allele have been used to evaluate how the loss of members of the RAD6 epistasis group affects Polzeta-dependent mutagenesis in response to spontaneous damage. Our data are consistent with a model in which Polzeta-dependent mutagenesis relies on the presence of either Rad5 or Rad18, which promote two distinct error-prone pathways that partially overlap with respect to lesion specificity. The smallest subunit of Poldelta, Pol32, is also required for Polzeta-dependent spontaneous mutagenesis, suggesting a cooperative role between Poldelta and Polzeta for the bypass of spontaneous lesions. A third error-free pathway relies on the presence of Mms2, but may not require PCNA.}, address = {Biochemistry, Cell and Developmental Biology Program of the Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30322, USA.}, author = {Minesinger, B. K. and Jinks-Robertson, S. }, citeulike-article-id = {2862647}, doi = {10.1534/genetics.104.033894}, issn = {0016-6731}, journal = {Genetics}, keywords = {polzeta, rad6, yeast}, month = {April}, number = {4}, pages = {1939--1955}, posted-at = {2008-06-04 21:43:55}, priority = {2}, title = {Roles of RAD6 epistasis group members in spontaneous polzeta-dependent translesion synthesis in Saccharomyces cerevisiae.}, url = {http://dx.doi.org/10.1534/genetics.104.033894}, volume = {169}, year = {2005} }

TY - JOUR ID - citeulike:2862647 L3 - citeulike-article-id:2862647 TI - Roles of RAD6 epistasis group members in spontaneous polzeta-dependent translesion synthesis in Saccharomyces cerevisiae. JF - Genetics VL - 169 IS - 4 SP - 1939 EP - 1955 AD - Biochemistry, Cell and Developmental Biology Program of the Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30322, USA. SN - 0016-6731 N2 - DNA lesions that arise during normal cellular metabolism can block the progress of replicative DNA polymerases, leading to cell cycle arrest and, in higher eukaryotes, apoptosis. Alternatively, such blocking lesions can be temporarily tolerated using either a recombination- or a translesion synthesis-based bypass mechanism. In Saccharomyces cerevisiae, members of the RAD6 epistasis group are key players in the regulation of lesion bypass by the translesion DNA polymerase Polzeta. In this study, changes in the reversion rate and spectrum of the lys2DeltaA746 -1 frameshift allele have been used to evaluate how the loss of members of the RAD6 epistasis group affects Polzeta-dependent mutagenesis in response to spontaneous damage. Our data are consistent with a model in which Polzeta-dependent mutagenesis relies on the presence of either Rad5 or Rad18, which promote two distinct error-prone pathways that partially overlap with respect to lesion specificity. The smallest subunit of Poldelta, Pol32, is also required for Polzeta-dependent spontaneous mutagenesis, suggesting a cooperative role between Poldelta and Polzeta for the bypass of spontaneous lesions. A third error-free pathway relies on the presence of Mms2, but may not require PCNA. KW - polzeta KW - rad6 KW - yeast AU - Minesinger, BK AU - Jinks-Robertson, S PY - 2005/04// UR - http://dx.doi.org/10.1534/genetics.104.033894 ER -