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Fission yeast Cdc37 is required for multiple cell cycle functions.
P K Westwood1, I V Martin, P A Fantes
1Institute of Cell and Molecular Biology, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JR, Scotland, UK.
Molecular Genetics and Genomics : MGG
|December 4, 2003
Summary
Researchers identified a Schizosaccharomyces pombe cdc37 gene homolog essential for cell division. Its depletion causes growth arrest and mitotic defects, revealing its critical role in the cell cycle.
Area of Science:
- * Molecular and Cellular Biology
- * Yeast Genetics
- * Cell Cycle Regulation
Background:
- * The cdc37 gene is crucial for cell division in various organisms.
- * Understanding its homologues in different yeast species aids in comparative biology.
Purpose of the Study:
- * To identify and characterize the Schizosaccharomyces pombe homologue of the cdc37 gene.
- * To investigate the essentiality and function of this gene in S. pombe cell cycle progression.
Main Methods:
- * Identification of the S. pombe cdc37 homologue through sequence similarity searches.
- * Gene transplacement experiments in diploid S. pombe cells.
- * Tetrad dissection and analysis of gene deletion phenotypes.
- * Gene product depletion using the regulatable nmt81 promoter.
Main Results:
- * The S. pombe cdc37 gene product shows similarity to budding yeast and metazoan Cdc37 proteins.
- * The gene is essential for viability in S. pombe.
- * Depletion of the gene product leads to growth and division cessation.
- * Cells exhibit heterogeneous arrest with mitotic defects and a paradoxical short-cell phenotype.
Conclusions:
- * The identified S. pombe cdc37 homologue is essential for cell viability and proper cell division.
- * Its function is conserved across different eukaryotic species, highlighting its fundamental role in cell cycle regulation.