Literature summary for 5.6.1.8 extracted from

Tamura, Y.; Kudo, T.; Sako, H.; Miyakama, S.; Nishimoto, T.; Saijo, Y.; Orino, S.; Mori, H.
Enzymatic properties of myosin ATPase from the conduction system of bovine heart (1985), Tokushima J. Exp. Med., 32, 1-8.

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Activating Compound

Activating Compound	Comment	Organism	Structure
actin	-	Bos taurus
N-ethylmaleimide	Ca2+-activated ATPase	Bos taurus

Inhibitors

Inhibitors	Comment	Organism	Structure
N-ethylmaleimide	in the absence of divalent cations and in the presence of K+ ions	Bos taurus

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	Bos taurus	-	ADP + phosphate + myosin bound to actin filament at position n+1	-	?

Organism

Organism	UniProt	Comment	Textmining
Bos taurus	-	-	-

Source Tissue

Source Tissue	Comment	Organism	Textmining
heart	conduction system and ventricular tissue	Bos taurus	-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg]	Specific Activity Maximum [µmol/min/mg]	Comment	Organism
0.03	-	conduction system, in the absence of actin	Bos taurus
0.04	-	actomyosin from ventricular tissue	Bos taurus
0.08	-	actomyosin from conduction system	Bos taurus
0.15	-	ventricular tissue, in the absence of actin	Bos taurus

Substrates and Products (Substrate)

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

Temperature Stability [°C]

Temperature Stability Minimum [°C]	Temperature Stability Maximum [°C]	Comment	Organism
25	37	100% inhibition after incubation at pH 9.0 and 37°C for 2 min, 10% at 25°C	Bos taurus

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Release 2023.1 (January 2023)