1887

Abstract

SUMMARY:

About 200 forward mutants of Neurospora obtained as suppressors of arg were studied. All fell in the region, and all appeared deficient in aspartic transcarbamylase (ATC) to various degrees: extreme deficiencies in ATC (-N alleles) resulted in pyrimidine-dependence as well as suppression of arg, while partial ATC deficiencies ( lleles) led only to suppression. Five different complementation groups were represented among the -N alleles studied. Evidence is presented which suggests that -N and lleles affect ATC via different mechanisms.

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/content/journal/micro/10.1099/00221287-30-2-327
1963-02-01
2021-10-20
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