TLS Online TPP Program

#Question id: 14764


Match the following proteins (Column I) with their function (Column II). Which of the following is correct?

Column I

Column II

a. Profilin

i. binds to the (+) end of an actin filament, thereby inhibiting subunit addition or loss.

 

b. Cofilin

ii. blocks (−) ends, inhibits filament disassembly, to stabilize filaments

c. Thymosin-β4

iii. involved in actin treadmilling, but it binds specifically to F-actin in which the subunits contain ADP

d. Cap Z

iv. binds ADP–G-actin and catalyzes the exchange of ADP for ATP

e. Tropomodulin

v. binds to ATP–G-actin in such a way that it inhibits addition of the actin subunit to either end of the filament.

#Unit 2. Cellular Organization
  1. a-i, b-ii, c-v, d-iv, e-iii
  2. a-ii, b-v, c-iv, d-iii, e-i
  3. a-iii, b-ii, c-i, d-iv, e-v
  4. a-iv, b-iii, c-v, d-i, e-ii