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a globulin that is present in muscle plasma and that in connection with myosin plays an important role in muscle contraction.
Source: Dictionary.com
actin | Define actin at Dictionary.com
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Actin - Wikipedia


Actin is a family of globular multi-functional proteins that form microfilaments. It is found in essentially all eukaryotic cells where it may be present at a ...

Actin, Myosin, and Cell Movement - The Cell - NCBI Bookshelf


Actin filaments, usually in association with myosin, are responsible for many types of cell movements. Myosin is the prototype of a molecular motor—a protein  ...

Actin structure and function. - NCBI


Actin is the most abundant protein in most eukaryotic cells. It is highly conserved and participates in more protein-protein interactions than any known protein.

What is Actin? (with picture)


Dec 14, 2016 ... Actin is a protein that allows cells to move and function. Without the tiny actin filaments, a cell would be unable to...

Actin Filaments


Actin monomer, depicted above left in two display modes, has subdomains designated 1-4. A simplified cartoon is above right. ATP binds, along with Mg<sup>++</sup>,  ...

Actin Filament - MBInfo


Actin filaments (F-actin) are linear polymers of globular actin (G-actin) subunits and occur as microfilaments in the cytoskeleton and as thin filaments, which are ...

What is the difference between myosin and actin? | Reference.com


The difference between myosin and actin is that, where myosin uses cellular energy to move along the actin, the actin is the passive partner in the process.

Muscle Contraction: Actin and Myosin Bonding - Video & Lesson ...


Muscles contract through the action of two proteins called actin and myosin. In this lesson, you'll learn how actin and myosin filaments, in...