Abstract
Byr3 was selected as a multicopy suppressor of the sporulation defects of diploid Schizosaccharomyces pombe cells that lack ras1. Like cells mutant at byr1 and byr2, two genes that encode putative protein kinases and that in multiple copies are also suppressors of the sporulation defects of ras1 null diploid cells, cells mutant at byr3 are viable but defective in conjugation. Nucleic acid sequence indicates byr3 has the capacity to encode a protein with seven zinc finger binding domains, similar in structure to the cellular nucleic acid binding protein (CNBP), a human protein that was identified on the basis of its ability to bind DNA. Expression of CNBP in yeast can partially suppress conjugation defects of cells lacking byr3.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Base Sequence
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Cloning, Molecular
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Conjugation, Genetic
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DNA, Fungal / genetics
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DNA-Binding Proteins / genetics*
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Fungal Proteins / genetics*
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Genes, Fungal*
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Genes, Suppressor
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Genes, ras
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Humans
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In Vitro Techniques
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Molecular Sequence Data
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Oligodeoxyribonucleotides / chemistry
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Precipitin Tests
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Recombinant Fusion Proteins / genetics
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Restriction Mapping
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Schizosaccharomyces / genetics*
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Schizosaccharomyces pombe Proteins*
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Sex Differentiation
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Spores, Fungal
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Zinc Fingers*
Substances
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DNA, Fungal
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DNA-Binding Proteins
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Fungal Proteins
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Oligodeoxyribonucleotides
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Recombinant Fusion Proteins
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Schizosaccharomyces pombe Proteins
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BYR3 protein, S pombe