1887

Abstract

SUMMARY: Four enzymes (threonine deaminase, -acetohydroxyacid synthetase, iso-propylmalate synthetase and transaminase B) involved in leucine, isoleucine and valine synthesis have been detected in extracts of the blue-green alga and the control of three of the enzymes examined. A new procedure for the determination of transaminase B is described. Threonine deaminase and -acetohydroxyacid synthetase are subject to feedback control by their end-products. No evidence for the repression of enzyme synthesis in the pathway has been found, although the assimilation and incorporation of exogenous valine and leucine was demonstrated.

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/content/journal/micro/10.1099/00221287-73-3-417
1972-12-01
2021-07-24
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