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Reference: Grey M, et al. (1996) Allelism of PSO4 and PRP19 links pre-mRNA processing with recombination and error-prone DNA repair in Saccharomyces cerevisiae. Nucleic Acids Res 24(20):4009-14

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Abstract


The radiation-sensitive mutant pso4-1 of Saccharomyces cerevisiae shows a pleiotropic phenotype, including sensitivity to DNA cross-linking agents, nearly blocked sporulation and reduced mutability. We have cloned the putative yeast DNA repair gene PSO4 from a genomic library by complementation of the blocked UV-induced mutagenesis and of sporulation in diploids homozygous for pso4-1. Sequence analysis revealed that gene PSO4 consists of 1512 bp located upstream of UBI4 on chromosome XII and encodes a putative protein of 56.7 kDa. PSO4 is allelic to PRP19, a gene encoding a spliceosome-associated protein, but shares no significant homology with other yeast genes. Gene disruption with a destroyed reading frame of our PSO4 clone resulted in death of haploid cells, confirming the finding that PSO4/PRP19 is an essential gene. Thus, PSO4 is the third essential DNA repair gene found in the yeast S.cerevisiae.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Grey M, Dusterhoft A, Henriques JA, Brendel M
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