29. The signal sequences that direct proteins to the nucleus are:
(A) always at the amino terminus of the targeted protein.
(B) cleaved after the protein arrives in the nucleus.
(C) not located at the ends of the peptide, but in its interior.
(D) glycosyl moieties containing mannose 6-phosphate residues.
(E) the same as those that direct certain proteins to lysosomes.

相關試題

相關試卷