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Literature summary for 1.1.1.27 extracted from

  • Oba, K.; Murakami, S.; Uritani, I.
    Partial purification and characterization of L-lactate dehydrogenase isozymes from sweet potato roots (1977), J. Biochem., 81, 1193-1201.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
ADP isoenzyme I and II, inhibition is reduced by MgCl2 Ipomoea batatas
AMP isoenzyme I and II, inhibition is reduced by MgCl2 Ipomoea batatas
ATP isoenzyme I and II, inhibition is reduced by MgCl2 Ipomoea batatas
NAD+ competitive with respect to NADH, reduction of pyruvate Ipomoea batatas
phosphoenolpyruvate
-
Ipomoea batatas

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0125
-
NADH pH 7.3, isoenzyme I and isoenzyme II Ipomoea batatas
0.34
-
pyruvate pH 7.3, isoenzyme I Ipomoea batatas
0.42
-
pyruvate pH 7.3, isoenzyme II Ipomoea batatas
0.5
-
pyruvate pH 6.5, isoenzyme II Ipomoea batatas
0.95
-
NAD+ pH 8.2, isoenzyme II Ipomoea batatas
1.5
-
pyruvate pH 6.5 Ipomoea batatas
17
-
(S)-lactate pH 8.2, isoenzyme II Ipomoea batatas
22
-
(S)-lactate pH 8.8, isoenzyme I Ipomoea batatas

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
150000
-
disc gel electrophoresis Ipomoea batatas

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
pyruvate + NADH + H+ Ipomoea batatas enzyme activity increases in response to infection by black-rot fungus but decreases in response to cutting L-lactate + NAD+
-
?

Organism

Organism UniProt Comment Textmining
Ipomoea batatas
-
-
-

Purification (Commentary)

Purification (Comment) Organism
isoenzyme I and II Ipomoea batatas
partial Ipomoea batatas

Source Tissue

Source Tissue Comment Organism Textmining
root
-
Ipomoea batatas
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Ipomoea batatas

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(S)-lactate + NAD+
-
Ipomoea batatas pyruvate + NADH + H+
-
r
pyruvate + NADH + H+
-
Ipomoea batatas (S)-lactate + NAD+
-
r
pyruvate + NADH + H+ enzyme activity increases in response to infection by black-rot fungus but decreases in response to cutting Ipomoea batatas L-lactate + NAD+
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.3
-
reduction of pyruvate, isoenzyme I and II Ipomoea batatas
7.8 8.8 oxidation of lactate, isoenzyme I and II Ipomoea batatas

Cofactor

Cofactor Comment Organism Structure
NAD+ coenzyme Ipomoea batatas
NADH coenzyme Ipomoea batatas