Below are a series of steps that occur during the synthesis of SECRETED proteins and their import INTO the rough ER. Please number these steps 1 to 5 based on the ORDER in which they occur (1st to 5th). [Select ] :cleavage of the signal sequence by Signal Peptidase [Select) > : Synthesis of the signal sequence by a translating ribosome [ Select] : binding of the ribosome to the Sec61 pore on the surface of the rough ER [ Select) : binding of the signal sequence by the Signal Recognition Particle Select) : feeding of the synthesizing protein chain through the Sec61 pore
