Winter J, Kandler O. Determination of the isotope distribution in malate-14C with fumarase-negative lactic acid bacteria.
Arch Microbiol 1977;
112:99-102. [PMID:
843172 DOI:
10.1007/bf00446660]
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Abstract
No fumarase activity could be found in whole cells or in cell-free crude extracts from Leuconostoc mesenteroides or Lactobacillus curvatus. The degradation of L-malate-4-14C by these organisms yielded more than 95% of the label as 14CO2. It is therefore recommended that these organisms, rather than Lactobacillus plantarum, should be used in the determination of isotope distribution in L-malate-14C, since L. plantarum exhibits a significant fumarase activity and thus randomizes malate prior to the decarboxylation of this substance by the malolactic enzyme.
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