Characteristics of Protein Translocation Systems Include All EXCEPT

Characteristics of protein translocation systems include all EXCEPT:

A) proteins to be translocated are made as pre-proteins containing contiguous blocks of amino acid sequences that act as sorting signals.
B) membranes involved in translocation have specific protein receptors exposed on their cytosolic faces.
C) translocons catalyze movement of the proteins across the membrane and metabolic energy in the form of ATP, GTP, or membrane potential is essential.
D) pre-proteins are maintained in a loosely folded, translocation-competent conformation through interaction with molecular chaperones.
E) all are characteristics.