Medical Dictionary

tropomyosin tro·po·my·o·sin (trō'pə-mī'ə-sĭn, trŏp'ə-)
n.
Any of a group of muscle proteins that bind to molecules of actin and troponin to regulate the interaction of actin and myosin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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One of the proteins that triggers allergic reactions has been identified as tropomyosin.
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