The identification of transposon-tagged mutations in essential genes that affect cell morphology in Saccharomyces cerevisiae.
Genetics
; 142(1): 39-50, 1996 Jan.
Article
in En
| MEDLINE
| ID: mdl-8770583
ABSTRACT
The yeast Saccharomyces cerevisiae reproduces by budding, and many genes are required for proper bud development. Mutations in some of these genes cause cells to die with an unusual terminal morphology-elongated or otherwise aberrantly shaped buds. To gain insight into bud development, we set out to identify novel genes that encode proteins required for proper bud morphogenesis. Previous studies screened collections of conditional mutations to identify genes required for essential functions, including bud formation. However, genes that are not susceptible to the generation of mutations that cause a conditional phenotype will not be identified in such screens. To identify a more comprehensive collection of mutants, we used transposon mutagenesis to generate a large collection of lethal disruption mutations. This collection was used to identify 209 mutants with disruptions that cause an aberrant terminal bud morphology. The disruption mutations in 33 of these mutants identify three previously uncharacterized genes as essential, and the mutant phenotypes suggest roles for their products in bud morphogenesis.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Saccharomyces cerevisiae
/
DNA Transposable Elements
/
Genes, Fungal
Type of study:
Diagnostic_studies
Language:
En
Journal:
Genetics
Year:
1996
Document type:
Article
Affiliation country:
Estados Unidos