3 types of protein transport

Question 1

3 types of protein transport

Answer 1

gated transport, transmembrane transport and vesicular transport

Question 2

gated transport

Answer 2

cytosol - nucleus

selective gates, active transport, macromolecular structures
diffusion of small molecules

Question 3

transmembrane transport

Answer 3

cytosol - peroxisome/plastids/mitochondria

protein translocators - unwind protein and pull it throuh

Question 4

Vesicular transport

Answer 4

ER, golgi, endosomes, vehicles and lysosomes

membrane enclosed vesicles which are loaded with cargo and move it

Question 5

golgi

Answer 5

generates vesicles for secretion

Question 6

most sorting signals

Answer 6

AA at the end of a polypeptide

• different sequence and different charge/chemical properties which are recognised by different proteins
• removed by signal peptidase after transport
• sometimes space out along the protein - forming a patch in the 3D structure

Question 7

recognition of protein-protein interactions is

Answer 7

the basis for most cellular processes