Journal of Nutritional Science and Vitaminology
Online ISSN : 1881-7742
Print ISSN : 0301-4800
ISSN-L : 0301-4800
The Presence of Glutamate Mutase in a Methanol-Utilizing Bacterium, Protaminobacter ruber
Shunsaku UEDAKazuyoshi SATOShoichi SHIMIZU
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1982 Volume 28 Issue 1 Pages 21-26

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Abstract

Cell-free extracts of a facultative methylotroph and strict aerobe, Protaminobacter ruber, could catalyze formation of β-methylaspartate from glutamate. β-Methylaspartate formed was further converted to mesaconate. From these results, it was found that the cells of P. ruber contained a sequential reaction system of glutamate mutase and β-methylaspartase. The level of glutamate mutase activity was almost constant throughout the period of cultivation. When P. ruber was grown on several non-one-carbon compounds in addition to methanol as a sole carbon source, the activity of glutamate mutase was not markedly affected by the kinds of carbon sources.

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