9. Which of the following pathway(s) is NOT the correct description for secretory proteins during protein transport?
(A) Secretory proteins move to the plasma membrane for protein expression.
(B) Trans-Golgi network is thought to be the sorting hub for secretory proteins.
(C) Secretory proteins can be recycled back to ER using the tyrosine-based sorting motif.
(D) Secretory proteins move to ER by cotranslational transport machinery in mammalian cells.
(E) All of above are correct.