Question

Which of the following interacts with the signal sequence in order to release proteins into the periplasm? IT IS NOT SecA

Choose one:

A. SRP

B. LepB

C. SecA

D. SecB

E. SecYEG translocon

8 Which of the following choices are associated directly with SecA?

Choose one or more:

A. interacting with SecB to receive pre-secretion protein

B. having ATPase activity

C. having protease activity to cleave signal sequence

D. having chaperone activity to help fold periplasmic proteins

E. interacting with SecYEG to move protein into periplasm

F. having plunger-like activity to push protein through channel

G. interacting with trigger factor to prevent protein folding

9 The maltose-binding protein (MBP) of Escherichia coli is a periplasmic protein made of 370 amino acids that is secreted through SecYEG. SecA would use _________ATP molecules to assist with translocation of MBP. A. 20 B. 18 C. 19 D. 1 E. 370