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. 1984 Nov;108(3):533-43.
doi: 10.1093/genetics/108.3.533.

SACCHAROMYCES CEREVISIAE Recessive Suppressor That Circumvents Phosphatidylserine Deficiency

K D Atkinson  1
Affiliations

SACCHAROMYCES CEREVISIAE Recessive Suppressor That Circumvents Phosphatidylserine Deficiency

K D Atkinson. Genetics. 1984 Nov.

Abstract

Phenotypic reversion of six independent Saccharomyces cerevisiae cho1 mutants was shown to be due predominantly to mutation of an unlinked gene, eam1. The eam1 gene was located very close to ino1 on chromosome X by meiotic tetrad analysis. Recessive eam1 mutations did not correct the primary cho1 defect in phosphatidylserine synthesis but made endogenous ethanolamine available for sustained nitrogenous phospholipid synthesis. A novel biochemical contribution to nitrogenous lipid synthesis is indicated by the eam1 mutants.

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