BRO1, a novel gene that interacts with components of the Pkc1p-mitogen-activated protein kinase pathway in Saccharomyces cerevisiae.
Yeast cells with mutations in BRO1 display phenotypes similar to those caused by deletion of BCK1, a gene encoding a MEK kinase that functions in a mitogen-activated protein kinase pathway mediating maintenance of cell integrity. bro1 cells exhibit a temperature-sensitive growth defect that is suppressed by the addition of osmotic ... stabilizers or Ca2+ to the growth medium or by additional copies of the BCK1 gene. At permissive temperatures, bro1 mutants are sensitive to caffeine and respond abnormally to nutrient limitation. A null mutation in BRO1 is synthetically lethal with null mutations in BCK1, MPK1, which encodes a mitogen-activated protein kinase that functions downstream of Bck1p, or PKC1, a gene encoding a protein kinase C homolog that activates Bck1p. Analysis of the isolated BRO1 gene revealed that it encodes a novel, 97-kDa polypeptide which contains a putative SH3 domain-binding motif and is homologous to a protein of unknown function in Caenorhabditis elegans.
Mesh Terms:
Amino Acid Sequence, Animals, Base Sequence, Caenorhabditis elegans, Calcium, Calcium-Calmodulin-Dependent Protein Kinases, Cell Division, Cloning, Molecular, DNA, Fungal, Genes, Fungal, Helminth Proteins, Molecular Sequence Data, Mutation, Phenotype, Protein Kinase C, Restriction Mapping, Saccharomyces cerevisiae, Sequence Homology, Amino Acid
Amino Acid Sequence, Animals, Base Sequence, Caenorhabditis elegans, Calcium, Calcium-Calmodulin-Dependent Protein Kinases, Cell Division, Cloning, Molecular, DNA, Fungal, Genes, Fungal, Helminth Proteins, Molecular Sequence Data, Mutation, Phenotype, Protein Kinase C, Restriction Mapping, Saccharomyces cerevisiae, Sequence Homology, Amino Acid
Mol. Cell. Biol.
Date: Jun. 01, 1996
PubMed ID: 8649366
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