Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
FEMS microbiology letters
57 (1989), S. 0
ISSN:
1574-6968
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract Washed cells of Peptostreptococcus productus (strain Marburg), which were incubated in the presence of CO/CO2/N2 (50%/ 17%/ 33%; 200 kPa) catalyzed the synthesis of acetate from carbon monoxide. The rate of acetate formation from CO was stimulated more than threefold by the addition of sodium (10 mM); potassium did not effect acetate synthesis. The degree of stimulation was dependent on the sodium concentration; the dependence followed simple Michaelis-Menten kinetics. The apparent Km for sodium was determined to be about 2 mmol/1. Sodium also stimulated acetate synthesis from H2 plus CO2. In the absence of added sodium the formation of formate as an intermediate in methyl group synthesis was stimulated. It is suggested that the sodium dependent reaction(s) is one (or more) of the reactions involved in methyl group synthesis from CO2.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1574-6968.1989.tb03363.x
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