tro·po·nin 
(trōpə-nĭn, trŏpə-)
(trōpə-nĭn, trŏpə-)n.
A calcium-regulated protein, composed of three subunits, that is found in skeletal and cardiac muscle and regulates contraction by interacting with tropomyosin to control the binding of myosin to actin. Blood troponin levels are a biomarker for muscle damage, as in myocardial infarction.
[TROPO(MYOSIN) + -IN.]
- set the stage for
- setting
- settle
- settleable
- settle down
- settle for
- settle hash
- settlement
- settle (one's) stomach
- settle one's stomach
- settler
- settler
- settle (someone's) hash
- settle someone's hash
- settle stomach
- settlings
- settlor
- set to
- set-to
- set up
- setup
- set up housekeeping
- set upon
- setup pitcher
- set up shop