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Trends Genet. 1992 Sep;8(9):312-6.

Ordering gene function: the interpretation of epistasis in regulatory hierarchies.

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  • 1Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas 75235-9038.

Abstract

The order of action of genes in a regulatory hierarchy that is governed by a signal can often be determined by the method of epistasis analysis, in which the phenotype of a double mutant is compared with that of single mutants. The epistatic mutation may be in either the upstream or the downstream gene, depending on the nature of the two mutations and the type of regulation. Nevertheless, when the regulatory hierarchy satisfies certain conditions, simple rules allow the position of the epistatic locus in the pathway to be determined without detailed knowledge of the nature of the mutations, the pathway, or the molecular mechanism of regulation.

PMID:
1365397
[PubMed - indexed for MEDLINE]
PMCID:
PMC3955268
Free PMC Article

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