Dmc1 of Schizosaccharomyces pombe plays a role in meiotic recombination.
We report here a Schizosaccharomyces pombe gene (dmc1(+)) that resembles budding yeast DMC1 in the region immediately upstream of the rad24(+) gene. We showed by northern and Southern blot analysis that dmc1(+) and rad24(+) are co-transcribed as a bicistronic mRNA of 2.8 kb with meiotic specificity, whereas rad24(+) itself is constitutively transcribed as a 1.0-kb mRNA species during meiosis. Induction of the bicistronic transcript is under the control of a meiosis-specific transcription factor, Ste11. Disruption of both dmc1(+) and rad24(+) had no effect on mitosis or spore formation, and dmc1Delta cells displayed no change in sensitivity to UV or gamma irradiation relative to the wild type. Tetrad analysis indicated that Dmc1 is involved in meiotic recombination. Analysis of gene conversion frequencies using single and double mutants of dmc1 and rhp51 indicated that both Dmc1 and Rhp51 function in meiotic gene conversion. These observations, together with a high level of sequence identity, indicate that the dmc1(+) gene of S. POMBE: is a structural homolog of budding yeast DMC1, sharing both similar and distinct functions in meiosis.
Fukushima
K
K
Department of Molecular Genetics, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita City, Osaka 565-0871, Japan.
Tanaka
Y
Y
Nabeshima
K
K
Yoneki
T
T
Tougan
T
T
Tanaka
S
S
Nojima
H
H
D018797:Cell Cycle Proteins / Q000235:genetics; D002455:Cell Division; D003434:Crossing Over, Genetic / Q000235:genetics; D018076:DNA, Complementary / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics / Q000502:physiology*; D005656:Fungal Proteins / Q000502:physiology; D005785:Gene Conversion / Q000235:genetics; D015966:Gene Expression Regulation, Fungal; D005800:Genes, Fungal / Q000235:genetics; D047908:Intracellular Signaling Peptides and Proteins; D008540:Meiosis / Q000235:genetics*; D008969:Molecular Sequence Data; D009154:Mutation; D016366:Open Reading Frames / Q000235:genetics; D012331:RNA, Fungal / Q000235:genetics / Q000302:isolation & purification; D045522:Recombinases / Q000235:genetics / Q000502:physiology*; D011995:Recombination, Genetic; D012441:Saccharomyces cerevisiae / Q000235:genetics; D029701:Saccharomyces cerevisiae Proteins; D012568:Schizosaccharomyces / Q000235:genetics*; D029702:Schizosaccharomyces pombe Proteins / Q000235:genetics / Q000502:physiology*; D014157:Transcription Factors / Q000502:physiology; D014158:Transcription, Genetic
D018797:Cell Cycle Proteins; C513033:DMC1 protein, S cerevisiae; D018076:DNA, Complementary; D004268:DNA-Binding Proteins; C514358:Dmc1 protein, S pombe; D005656:Fungal Proteins; D047908:Intracellular Signaling Peptides and Proteins; C088385:RAD24 protein, S cerevisiae; D012331:RNA, Fungal; D045522:Recombinases; D029701:Saccharomyces cerevisiae Proteins; D029702:Schizosaccharomyces pombe Proteins; D014157:Transcription Factors; C501114:rad24 protein, S pombe; C071596:ste11 protein, S pombe