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Literature summary 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

EC Number Inhibitors Comment Organism Structure
1.1.1.27 NAD+
-
Clupea harengus

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.1.1.27 0.07
-
pyruvate pH 7.2, 25°C, isoenzyme LDH-A2B2 Clupea harengus
1.1.1.27 0.09
-
pyruvate pH 7.6, 25°C, isoenzyme LDH-B4 Clupea harengus
1.1.1.27 0.22
-
pyruvate pH 7.1, 25°C, isoenzyme LDH-A4 Clupea harengus

Organism

EC Number Organism UniProt Comment Textmining
1.1.1.27 Clarias gariepinus
-
-
-
1.1.1.27 Clupea harengus
-
-
-
1.1.1.27 Cyprinus carpio
-
-
-

Purification (Commentary)

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

Source Tissue

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

Substrates and Products (Substrate)

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

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
1.1.1.27 45
-
20 min, about 10% loss of activity, isoenzyme A4 Clupea harengus
1.1.1.27 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
1.1.1.27 51
-
20 min, about 75% loss of activity, isoenzyme A4 Clupea harengus
1.1.1.27 53
-
20 min, complete loss of activity of isoenzyme A4, about 40% loss of activity of isoenzyme A2B2 Clupea harengus
1.1.1.27 55
-
20 min, about 90% loss of activity of isoenzyme A2B2, about 15% loss of activity of isoenzyme B4 Clupea harengus
1.1.1.27 66
-
20 min, about 35% loss of activity of isoenzyme B4 Clupea harengus
1.1.1.27 68
-
20 min, about 68% loss of activity of isoenzyme B4 Clupea harengus
1.1.1.27 71
-
20 min, complete loss of activity of isoenzyme B4 Clupea harengus

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.1.1.27 7.1
-
reduction of pyruvate, isoenzyme LDH-A4 Clupea harengus
1.1.1.27 7.25
-
reduction of pyruvate, isoenzyme LDH-A2B2 Clupea harengus
1.1.1.27 7.6
-
reduction of pyruvate, isoenzyme LDH-B4 Clupea harengus

pH Range

EC Number pH Minimum pH Maximum Comment Organism
1.1.1.27 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

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