Carbon dioxide fixation by cell-free extracts of group D streptococci
- 1 January 1969
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 15 (1) , 61-66
- https://doi.org/10.1139/m69-010
Abstract
Cell-free extracts of group D streptococci incorporated 14CO2 into aspartate. Pyruvate was the acceptor of CO2 for Streptococcus faecium; phosphoenolpyruvate was the CO2 acceptor for S. bovis; and both substrates were CO2 acceptors for S. faecalis. The enzymes, by which the CO2 fixation was effected, appear to be pyruvate carboxylase for S. faecium, phosphoenolpyruvate (PEP) carboxykinase and PEP carboxylase for S. bovis, and pyruvate carboxylase and PEP carboxykinase for S. faecalis.Keywords
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