1887

Abstract

SUMMARY

F′ elements carrying wild-type alleles of the methionine regulatory genes and have been transferred from to and mutants of , and the resulting heterogenotes tested for resistance to methionine analogues and for repressibility of cystathionase (one of the methionine biosynthetic enzymes). The wild-type alleles of both genes were dominant in both tests. Increased gene dosage was found to have no effect on the rate of uptake of [C]methionine by cell suspensions. Possible roles for the and gene products in the regulation of methionine synthesis are considered.

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/content/journal/micro/10.1099/00221287-63-1-95
1970-09-01
2021-08-05
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