1887

Abstract

SUMMARY: Glutamine synthetase in 168 was repressed to a greater extent by -glutamine or -arginine than by ammonia when each was used as sole nitrogen source. It was derepressed when either -glutamate or nitrate was used as nitrogen source. Glutamate synthase was repressed by -glutamate or -arginine and, to a lesser extent, by -glutamine but was derepressed during growth with ammonia or nitrate. Glutamine synthetase activity was unaltered during the onset of sporulation. Glutamate synthase activity, however, underwent a small and apparently transient increase in bacteria induced to sporulate by nitrogen limitation.

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1979-06-01
2021-08-01
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