1887

Abstract

SUMMARY

Two pathways for methionine methyl formation, one cobalamin-dependent and one cobalamin-independent, corresponding to those observed in 15 have been found in . An initial difficulty in showing the cobalamin-dependent pathway in cell-free extracts proved to be due to the presence of enzymes which caused the removal of adenosylmethionine, a cofactor required for this system. In contrast to . 15, . contains holocobalaminmethyl-transferase even when grown in the absence of cobalamin. When cobalamin is added to the growth medium, the cobalamin-independent pathway is repressed.

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/content/journal/micro/10.1099/00221287-39-1-43
1965-04-01
2021-08-05
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