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Myosin ATPase (EC 3.6.4.1) is an enzyme with systematic name ATP phosphohydrolase (actin-translocating).^[1]^[2]^[3] This enzyme catalyses the following chemical reaction:

ATP + H₂O

\rightleftharpoons

ATP hydrolysis provides energy for actomyosin contraction.

References

^ Rayment I (July 1996). "The structural basis of the myosin ATPase activity". The Journal of Biological Chemistry. 271 (27): 15850–3. doi:10.1074/jbc.271.27.15850. PMID 8663496.
^ Hasson T, Mooseker MS (July 1996). "Vertebrate unconventional myosins". The Journal of Biological Chemistry. 271 (28): 16431–4. doi:10.1074/jbc.271.28.16431. PMID 8690736.
^ Murphy CT, Spudich JA (March 1999). "The sequence of the myosin 50-20K loop affects Myosin's affinity for actin throughout the actin-myosin ATPase cycle and its maximum ATPase activity". Biochemistry. 38 (12): 3785–92. doi:10.1021/bi9826815. PMID 10090768.

Myosin+ATPase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)