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. 1993 Apr;133(4):837–849. doi: 10.1093/genetics/133.4.837

A Mutational Analysis of Killer Toxin Resistance in Saccharomyces Cerevisiae Identifies New Genes Involved in Cell Wall (1 -> 6)-β-Glucan Synthesis

J L Brown 1, Z Kossaczka 1, B Jiang 1, H Bussey 1
PMCID: PMC1205404  PMID: 8462845

Abstract

Recessive mutations leading to killer resistance identify the KRE9, KRE10 and KRE11 genes. Mutations in both the KRE9 and KRE11 genes lead to reduced levels of (1 -> 6)-β-glucan in the yeast cell wall. The KRE11 gene encodes a putative 63-kD cytoplasmic protein, and disruption of the KRE11 locus leads to a 50% reduced level of cell wall (1 -> 6)-glucan. Structural analysis of the (1 -> 6)-β-glucan remaining in a kre11 mutant indicates a polymer smaller in size than wild type, but containing a similar proportion of (1 -> 6)- and (1 -> 3)-linkages. Genetic interactions among cells harboring mutations at the KRE11, KRE6 and KRE1 loci indicate lethality of kre11 kre6 double mutants and that kre11 is epistatic to kre1, with both gene products required to produce the mature glucan polymer at wild-type levels. Analysis of these KRE genes should extend knowledge of the β-glucan biosynthetic pathway, and of cell wall synthesis in yeast.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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