Key result
Double mutations lacking fimbrin and either Abp1p or capping protein resulted in synthetic lethality in yeast, demonstrating that the actin cytoskeleton does not contain a high degree of redundancy.
Population
Saccharomyces cerevisiae (yeast) strains
Comparison
Double and triple null mutations in genes… vs Single mutants and wild-type strains
Design
Preclinical
Authors
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Mild null phenotypes indicate actin regulator redundancy; leaves open essential roles and therapeutic relevance in mammalian cardiovascular cells.
The study demonstrates that the yeast actin cytoskeleton lacks high redundancy, as specific combinations of null mutations in actin-binding proteins are lethal.
Adams et al. (1993) studied this question. Double and triple null mutations in actin-binding protein genes vs. Single mutations and wild-type yeast was evaluated on Cell viability and growth. Double mutations lacking fimbrin and either Abp1p or capping protein resulted in synthetic lethality in yeast, demonstrating that the actin cytoskeleton does not contain a high degree of redundancy.
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