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A complex of actin, myosin, and associated proteins that is responsible for contraction in cells, especially muscle cells.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biochemistry) a complex protein in skeletal muscle that is formed by actin and myosin and which, when stimulated, shortens to cause muscle contraction
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ac•to•my•o•sin(ˌæk təˈmaɪ ə sɪn)
a complex of the proteins actin and myosin that is a major constituent of muscle tissue and that interacts with ATP to cause muscular contraction.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||actomyosin - a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions|
protein - any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; "a diet high in protein"
actin - one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form
myosin - the commonest protein in muscle; a globulin that combines with actin to form actomyosin
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