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Literature summary for 5.6.1.8 extracted from

  • Bechet, J.J.; Bachouchi, N.; Janmot, C.; d'Albis, A.
    Isoenzymes of myosin subfragments. Chromatographic fractionation on carboxymethylcellulose and actin-activated ATPase activity as a function of temperature (1982), Biochim. Biophys. Acta, 703, 54-61.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
actin
-
Oryctolagus cuniculus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.007
-
ATP heavy meromyosin, isoenzyme A1 homodimer, actin activated Oryctolagus cuniculus
0.015
-
ATP subfragment 1, isoenzyme A1 homodimer, actin activated Oryctolagus cuniculus
0.02
-
ATP heavy meromyosin, isoenzyme A1A2 heterodimer, actin activated Oryctolagus cuniculus
0.03
-
ATP heavy meromyosin, isoenzyme A2 homodimer, actin activated Oryctolagus cuniculus
0.05
-
ATP subfragment 1, isoenzyme A2 homodimer, actin activated Oryctolagus cuniculus

Natural Substrates/ Products (Substrates)

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

Organism

Organism UniProt Comment Textmining
Oryctolagus cuniculus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
skeletal muscle
-
Oryctolagus cuniculus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + H2O + myosin bound to actin filament at position n
-
Oryctolagus cuniculus ADP + phosphate + myosin bound to actin filament at position n+1
-
?

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
0.033
-
ATP various isoenzymes of subfragment 1 and heavy-meromyosin, absence of actin Oryctolagus cuniculus
11
-
ATP heavy meromyosin, isoenzyme A1 homodimer, actin activated Oryctolagus cuniculus
11.3
-
ATP subfragment 1, isoenzyme A1 homodimer, actin activated Oryctolagus cuniculus
11.5
-
ATP subfragment 1, isoenzyme A2 homodimer, actin activated Oryctolagus cuniculus
14
-
ATP heavy meromyosin, isoenzyme A1A2 heterodimer, actin activated Oryctolagus cuniculus
15.5
-
ATP heavy meromyosin, isoenzyme A2 homodimer, actin activated Oryctolagus cuniculus