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actomyosin

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ac⋅to⋅my⋅o⋅sin

[ak-tuh-mahy-uh-sin]
–noun Biochemistry.
a complex protein, consisting of myosin and actin, that is the major constituent of skeletal muscle and is thought to interact with ATP to cause muscle contraction.

Origin:
1940–45; act(in) + -o- + myosin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ac·to·my·o·sin   (āk'tə-mī'ə-sĭn)   
n.  The system of actin and myosin that, with other substances, constitutes muscle fiber and is responsible for muscular contraction.

[act(in) + myosin.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ac·to·my·o·sin
Pronunciation: "ak-t&-'mI-&-s&n
Function: noun
: a viscous contractile complex of actinand myosin concerned together with ATP in muscular contraction
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

actomyosin ac·to·my·o·sin (āk'tə-mī'ə-sĭn)
n.
A protein complex that is the essential contractile substance of muscle, composed of the globulin myosin and actin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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