we have previously reported that troponin t ( tnt ) , a regulatory protein in muscle contraction , undergoes a switch from the larger , acidic embryonic form to the smaller , basic adult form during rat heart development ( jin , j.-p. , and lin , j.j.-c. ( 1988 ) j. biol . chem . 263 , 7309-7315 ) .
C0077404
troponin t
C0026820
muscle contraction