actin
[ ak-tuhn ]
/ ˈæk tən /
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noun Biochemistry.
a globulin that is present in muscle plasma and that in connection with myosin plays an important role in muscle contraction.
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Words nearby actin
act curtain, actg., ACTH, Acthar, ACTH-producing adenoma, actin, actinal, actin filament, acting, acting area, actinia
Definition for actin (2 of 2)
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British Dictionary definitions for actin
actin
/ (ˈæktɪn) /
noun
a protein that participates in many kinds of cell movement, including muscle contraction, during which it interacts with filaments of a second protein, myosin
Word Origin for actin
C20: from act + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for actin
actin
[ ăk′tĭn ]
n.
One of the protein components found in muscle, existing as F-actin or G-actin, into which actomyosin can be split and which acts with myosin in muscle contraction.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for actin
actin
[ ăk′tĭn ]
A protein found in all eukaryotic cells, forming filaments that make up a main component of the cell's supporting matrix or cytoskeleton. Actin and the protein myosin together make up the contractile units (called sarcomeres) of skeletal muscle fibers.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.