Abstract
Cells of Schizosaccharomyces pombe undergo mating and meiosis when starved for a nitrogen source. In this process a P and and M cell first mate to generate a diploid zygote, which subsequently enters meiosis and sporulates. The P mating type is controlled by the mat1-Pc gene at the mating type locus, together with a gene called map1. We show that these two functions are required for expression of the P-specific gene map3. We have cloned the map1 gene and show that it encodes a putative MADS-box containing transcription factor related to mammalian Serum Response Factor (SRF) and Saccharomyces cerevisiae MCM1. The Mat1-Pc protein contains a motif characteristic for proteins that interact with MADS-box factors, suggesting that Mat-Pc and Map1 may form a heterodimer that activates the P-specific map3 gene.
Original language | English |
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Journal | Molecular and General Genetics MGG |
Volume | 253 |
Issue number | 3 |
Pages (from-to) | 387-92 |
Number of pages | 6 |
ISSN | 0026-8925 |
Publication status | Published - 13 Dec 1996 |
Keywords
- Amino Acid Sequence
- Cloning, Molecular
- DNA-Binding Proteins
- Gene Expression Regulation, Fungal
- Genes, Fungal
- Genes, Mating Type, Fungal
- High Mobility Group Proteins
- Homeodomain Proteins
- MCM1 Protein
- Molecular Sequence Data
- Nuclear Proteins
- Restriction Mapping
- Schizosaccharomyces
- Schizosaccharomyces pombe Proteins
- Sequence Homology, Amino Acid
- Serum Response Factor
- Transcription Factors