Functions Of Sarcomere Proteins Flashcards
1
Q
Actin
A
Principal protein of the thin filaments; contains sites where myosin heads bind during muscle contraction
2
Q
Myosin
A
Myosin tails form the shaft of thick filaments; myosin heads bind to the myosin binding sites of actin during muscle contraction
3
Q
Myomesin
A
Found in the M-Lines; helps stabilize the position of the thick filaments
4
Q
Titin
A
Prevents the sarcomere from overstretching
5
Q
Tropomyosin
A
Blocks the myosin binding sites when muscle is relaxed (Part of the thin filament)
6
Q
Troponin
A
Holds tropomyosin in position
7
Q
Dystrophin
A
Links thin filaments to proteins in the sarcolemma; helps transmit muscle tension to the tendons (stabilize muscle during contraction)
8
Q
Nebulin
A
Aligns the thin filaments
