Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

The following proteins are all members of a class of proteins bind to the side o

ID: 62196 • Letter: T

Question

The following proteins are all members of a class of proteins bind to the side of microtubules. They have different functions, some stabilize and some destabilize microtubles.

Capz

tau

XMAP215

MAP2

cofilin

KINESIN 13

tropomyosin



The following accessory protein binds to tubulin dimers and is analogous in function to thymosin.

cofilin

profilin

kinesin-13

stathmin


The following protein binds to the side of actin filaments and stabilizes it through interaction with seven actin molecules.

cofilin

tropomyosin

thymosin

profilin


The following severing protein binds to microtubules and can both promote assembly of new polymers and promote disassembly of oldpolymers.

gelsolin

katanin

MAP2

TAU


The following protein binds to the side of actin filaments and destabilizes them by twisting the filament and weakining the contacts between the actin molecules.

cofilin

profilin

Arp

tropomyosin

A.

Capz

B.

tau

C.

XMAP215

D.

MAP2

E.

cofilin

F.

KINESIN 13

G.

tropomyosin



The following accessory protein binds to tubulin dimers and is analogous in function to thymosin.

A.

cofilin

B.

profilin

C.

kinesin-13

D.

stathmin


The following protein binds to the side of actin filaments and stabilizes it through interaction with seven actin molecules.

A.

cofilin

B.

tropomyosin

C.

thymosin

D.

profilin


The following severing protein binds to microtubules and can both promote assembly of new polymers and promote disassembly of oldpolymers.

A.

gelsolin

B.

katanin

C.

MAP2

D.

TAU


The following protein binds to the side of actin filaments and destabilizes them by twisting the filament and weakining the contacts between the actin molecules.

cofilin

profilin

Arp

tropomyosin

Explanation / Answer

1. MAP2 and tau proteins are involved in stabilization of microtubules. Options B and D are correct.

2. Profilin is the accessory protein binds to tubulin dimers and is analogous in function to thymosin. Option B is correct.

3. Katanin severing protein binds to microtubules and can both promote assembly of new polymers and promote disassembly of oldpolymers. Option B is correct.

4. Arp protein binds to the side of actin filaments and destabilizes them by twisting the filament and weakining the contacts between the actin molecules. Option C is correct.