Actin Flashcards
1
Q
what is another word for actin monomers
A
G-actin- globular protein
2
Q
how are actin filaments formed
A
by the polymerisation of actin monomers
3
Q
what is another term for actin filaments
A
F-actin
4
Q
what is a key feature of actin filaments
A
they have polarity
5
Q
what is meant by actin polarity
A
fast growing end, plus end, barbed end
slow growing end, minus end, pointed end
6
Q
in which direction does myosin move across the actin filament
A
towards the fast growing end of the actin filament
7
Q
what protein is found at the fast growing end
A
- capping protein
8
Q
what anchors thin filaments in the Z-disc
A
cross-linked by alpha-actinin
9
Q
what protein is found at the slow growing end
A
tropomodulin
10
Q
what protein regulates the LENGTH of thin filaments
A
nebulin. there are 2 molcules per every thin filament
