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Literature summary for 1.1.1.27 extracted from

  • Gronczewska, J.; Zietara, M.S.; Biegniewska, A.; Skorkowski, E.F.
    Enzyme activities in fish spermatozoa with focus on lactate dehydrogenase isoenzymes from herring Clupea harengus (2003), Comp. Biochem. Physiol. B, 134, 399-406.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
NAD+
-
Clupea harengus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.07
-
pyruvate pH 7.2, 25°C, isoenzyme LDH-A2B2 Clupea harengus
0.09
-
pyruvate pH 7.6, 25°C, isoenzyme LDH-B4 Clupea harengus
0.22
-
pyruvate pH 7.1, 25°C, isoenzyme LDH-A4 Clupea harengus

Organism

Organism UniProt Comment Textmining
Clarias gariepinus
-
-
-
Clupea harengus
-
-
-
Cyprinus carpio
-
-
-

Purification (Commentary)

Purification (Comment) Organism
isoenzyme LDH-A4 from muscle Clupea harengus

Source Tissue

Source Tissue Comment Organism Textmining
skeletal muscle isoenzyme LDH-A4 Clupea harengus
-
spermatozoon
-
Cyprinus carpio
-
spermatozoon
-
Clarias gariepinus
-
spermatozoon isoenzyme LDH-B4 and LDH-A2B2 Clupea harengus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
pyruvate + NADH + H+
-
Cyprinus carpio (S)-lactate + NAD+
-
?
pyruvate + NADH + H+
-
Clarias gariepinus (S)-lactate + NAD+
-
?
pyruvate + NADH + H+
-
Clupea harengus (S)-lactate + NAD+
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
45
-
20 min, about 10% loss of activity, isoenzyme A4 Clupea harengus
50
-
20 min, about 40% loss of activity of isoenzyme A4, about 10% loss of activity of isoenzyme B4, about 25% loss of activity of isoenzyme A2B2 Clupea harengus
51
-
20 min, about 75% loss of activity, isoenzyme A4 Clupea harengus
53
-
20 min, complete loss of activity of isoenzyme A4, about 40% loss of activity of isoenzyme A2B2 Clupea harengus
55
-
20 min, about 90% loss of activity of isoenzyme A2B2, about 15% loss of activity of isoenzyme B4 Clupea harengus
66
-
20 min, about 35% loss of activity of isoenzyme B4 Clupea harengus
68
-
20 min, about 68% loss of activity of isoenzyme B4 Clupea harengus
71
-
20 min, complete loss of activity of isoenzyme B4 Clupea harengus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.1
-
reduction of pyruvate, isoenzyme LDH-A4 Clupea harengus
7.25
-
reduction of pyruvate, isoenzyme LDH-A2B2 Clupea harengus
7.6
-
reduction of pyruvate, isoenzyme LDH-B4 Clupea harengus

pH Range

pH Minimum pH Maximum Comment Organism
5.5 8 pH 5.5: 40% of maximal activity of isoenzyme LDH-B4 and 60% of maximal activity of isoenzyme LDH-A2B2 and LDH-A4, pH 8.0: about 60% of maximal activity of isoenzyme LDH-A4, LDH-B4 and LDH-A4B4, reduction of pyruvate Clupea harengus

Cofactor

Cofactor Comment Organism Structure
NADH
-
Cyprinus carpio
NADH
-
Clarias gariepinus
NADH
-
Clupea harengus