Cunliffe, L., White, S. and McInerny, C.J. (2004) DSC1-MCB regulation of meiotic transcription in Schizosaccharomyces pombe. Molecular Genetics and Genomics, 271(1), pp. 60-71. (doi: 10.1007/s00438-003-0956-6)
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Abstract
Meiosis is initiated from the G1 phase of the mitotic cell cycle, and consists of pre-meiotic S-phase followed by two successive nuclear divisions. Here we show that control of gene expression during pre-meiotic S-phase in the fission yeast Schizosaccharomyces pombe is mediated by a DNA synthesis control-like transcription factor complex (DSC1), which acts upon M lu1 cell cycle box (MCB) promoter motifs. Several genes, including <i>rec8</i><sup>+</sup>, <i>rec11</i><sup>+</sup>, <i>cdc18</i><sup>+</sup>, and <i>cdc22</i><sup>+</sup>, which contain MCB motifs in their promoter regions, are found to be co-ordinately regulated during pre-meiotic S-phase. Both synthetic and native MCB motifs are shown to confer meiotic-specific transcription on a heterologous reporter gene. A DSC1-like transcription factor complex that binds to MCB motifs was also identified in meiotic cells. The effect of mutating and over-expressing individual components of DSC1 (<i>cdc10</i><sup>+</sup>, <i>res1</i><sup>+</sup>, <i>res2</i><sup>+</sup>, <i>rep1</i><sup>+</sup> and <i>rep2</i><sup>+</sup>) on the transcription of <i>cdc22</i><sup>+</sup>, <i>rec8</i><sup>+</sup> and <i>rec11</i><sup>+</sup> during meiosis was examined. We found that <i>cdc10</i><sup>+</sup>, <i>res2</i><sup>+</sup>, <i>rep1</i><sup>+</sup> and <i>rep2</i><sup>+</sup> are required for correct meiotic transcription, while <i>res1</i><sup>+</sup> is not required for this process. This work demonstrates a role for MCB motifs and a DSC1-like transcription factor complex in controlling transcription during meiosis in fission yeast, and suggests a mechanism for how this specific expression occurs.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | McInerny, Dr Chris and White, Dr Stewart |
Authors: | Cunliffe, L., White, S., and McInerny, C.J. |
College/School: | College of Medical Veterinary and Life Sciences > School of Life Sciences College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
Journal Name: | Molecular Genetics and Genomics |
Journal Abbr.: | Mol. Genet. Genomics |
ISSN: | 1617-4615 |
ISSN (Online): | 1617-4623 |
Published Online: | 29 November 2003 |
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