Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots.

Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Research Abstract Details 

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Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Abstract Text:

K Oba,S Murakami,I Uritani,

Lactate dehydrogenase [L-lactate: NAD oxidoreductase, EC 1.1.1.27] was isolated from sweet potato root tissues. Two species of the enzyme (isozymes I and II) were separated by DE-52 cellulose column chromatography from healthy, cut, and black-rot diseased tissues. Isozymes I and II were purified from healthy and diseased tissues, respectively. Reduction of pyruvate by NADH with either isozyme I or II was inhibited by pyruvate at high concentrations, by NAD+ and by several mononucleotides. Isozyme I was inhibited by a lower concentration of adenine nucleotide than isozyme II, and Km for pyruvate was increased markedly at acidic pH in the case of isozyme I, but only slightly in the case of isozyme II. The molecular weights of both isozymes were determined to be 150,000 and they were found to be charge isomers by polyacrylamide gel electrophoresis. The enzyme activity increased in response to infection by black-rot fungus but decreased in response to cutting.

Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Publishing Authors By Initials

K Oba,S Murakami,I Uritani,

For similar biochemical phenomena, metabolism, and nutrition: biochemical phenomena: structure-activity relationship research abstracts see: biochemical phenomena, metabolism, and nutrition: biochemical phenomena: structure-activity relationship research

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Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 81

Page Numbers: 1193-201

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: May

YEAR: 1977

Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Information

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LANGUAGE: eng

NlmUniqueID: 376600

Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Keywords Mesh Terms:

KEYWORDS: Structure-Activity Relationship

MESH TERMS: enzymology

Chemical & Substance for Abstract: Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots. Information

Substance Name: L-Lactate Dehydrogenase

Registry Number: EC 1.1.1.27

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Country: JAPAN

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MEDLINETA: J Biochem

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