MYOSIN ATPASE Meaning and
Definition
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Myosin ATPase is an enzyme that belongs to the class of ATPases, which are enzymes that catalyze the hydrolysis of ATP (adenosine triphosphate) into ADP (adenosine diphosphate) and an inorganic phosphate ion. Specifically, myosin ATPase is found in muscle cells and plays a crucial role in muscle contraction.
Myosin ATPase is located in the head region of the myosin molecule, which is a protein responsible for generating force and movement within muscle cells. During muscle contraction, myosin ATPase utilizes ATP as an energy source to power the cross-bridge cycle between myosin and actin filaments. In this process, myosin ATPase breaks down ATP into ADP and inorganic phosphate, releasing energy that is stored in the myosin molecule.
This enzymatic activity is essential for muscle contraction as it allows myosin to bind to actin, form cross-bridges, and undergo a series of conformational changes that eventually lead to the shortening of the sarcomere, the basic unit of muscle contraction. The hydrolysis of ATP by myosin ATPase is a key step in this cycle, providing the energy necessary for myosin to remain attached to actin and generate force during muscle contraction.
In summary, myosin ATPase is an enzyme found in muscle cells that catalyzes the hydrolysis of ATP. This enzymatic activity is crucial for the cross-bridge cycle between myosin and actin filaments, enabling muscle contraction by providing the energy required for the generation of force and movement.
Common Misspellings for MYOSIN ATPASE
- nyosin atpase
- kyosin atpase
- jyosin atpase
- mtosin atpase
- mgosin atpase
- mhosin atpase
- muosin atpase
- m7osin atpase
- m6osin atpase
- myisin atpase
- myksin atpase
- mylsin atpase
- mypsin atpase
- my0sin atpase
- my9sin atpase
- myoain atpase
- myozin atpase
- myoxin atpase
- myodin atpase
- myoein atpase
Etymology of MYOSIN ATPASE
The word "myosin ATPase" has a compound etymology.
The term "myosin" comes from the Greek word "mysos", meaning "muscle". It was coined in the mid-19th century to describe the contractile protein found in muscle cells.
"ATPase" is a combination of two components. "ATP" stands for adenosine triphosphate, a molecule that serves as the primary energy source for cellular processes. "ASE" is a common suffix in biochemistry that denotes an enzyme, derived from the Greek word "asein", meaning "to unbind" or "to loosen". Hence, "ATPase" references the enzyme that catalyzes the hydrolysis of ATP.
Together, "myosin ATPase" refers to an enzyme that is part of the myosin protein and plays a crucial role in muscle contraction.
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