Structure of Actin Flashcards
1
Q
What is the thin actin filament formed from?
A
a helix of action sub-units
2
Q
What does each action sub-unit contain?
A
a binding site for the myosin heads
3
Q
Name the 2 other proteins attached to actin fibre
A
tropomyosin
troponin
4
Q
what is tropomyosin?
A
A wound attached around the actin to reinforce it
5
Q
what is troponin?
A
A bound to tropomyosin and actin, contains calcium ion binding sites
