The Journal of General and Applied Microbiology
Online ISSN : 1349-8037
Print ISSN : 0022-1260
ISSN-L : 0022-1260
TEMPERATURE-DEPENDENCE AND DISTRIBUTION OF NADH DEHYDROGENASE IN A PSYCHROPHILIC BACTERIUM, VIBRIO SP. STRAIN ABE-1
YASUHIRO TAKADANORIYUKI FUKUNAGASHOJI SASAKI
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1981 Volume 27 Issue 4 Pages 327-337

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Abstract

NADH dehydrogenase (EC 1.6.99.3), which catalyzes the first reaction of the NADH oxidase system known to operate actively at low temperature in Vibrio sp. strain ABE-1, was examined in respect of intracellular distribution, temperature- and salts-dependencies, and so on.
Almost the same amount of the enzyme was distributed in the cytoplasmic and membrane fractions, and the enzymes in the two fractions were presumed to be different ones by virtue of their properties such as optimum pH, salts- and temperature-dependencies.
Both enzymes were unique in that they were able to function at a remarkably high rate under lower temperatures: the activities at 5° were about 70% of the respective maximum activities.

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© The Microbiology Research Foundation
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