actin

English Thesaurus

1. one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form (noun.substance)

hypernym	:	simple protein,
definition	:	a protein that yields only amino acids when hydrolyzed (noun.substance)

substance meronym	:	actomyosin,
definition	:	a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions (noun.substance)