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Literature summary extracted from

  • Pope, B.; Hoh, J.F.Y.; Weeds, A.
    The ATPase activities of rat cardiac myosin isoenzymes (1980), FEBS Lett., 118, 205-209.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
5.6.1.8 actin
-
 Rattus norvegicus

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
5.6.1.8 ATP + H2O + myosin bound to actin filament at position n Rattus norvegicus
-
 ADP + phosphate + myosin bound to actin filament at position n+1
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
5.6.1.8 Rattus norvegicus
-
-
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
5.6.1.8 cardiac ventricle
-
 Rattus norvegicus
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
5.6.1.8 0.18
-
 K+(EDTA)-ATPase, isoenzyme V1 Rattus norvegicus
5.6.1.8 0.2
-
 K+(EDTA)-ATPase, isoenzyme V3 Rattus norvegicus
5.6.1.8 0.28
-
 Ca-ATPase activity, isoenzyme V3 Rattus norvegicus
5.6.1.8 0.82
-
 Ca-ATPase activity, isoenzyme V1 Rattus norvegicus

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
5.6.1.8 ATP + H2O + myosin bound to actin filament at position n
-
 Rattus norvegicus ADP + phosphate + myosin bound to actin filament at position n+1
-
 ?

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
5.6.1.8 9
-
 after 1 h at pH 9.0 isoenzyme V1 shows 2-12% loss of activity compared with 45% for isoenzyme V3 Rattus norvegicus