Which of the following sets of amino acids would you expect to be predominant in a signal sequence for a secreted protein?
A) leu, ile, val
B) arg, lys, his
C) cys, met, pro
D) asp, asn, gln
E) glu, ser, thr

Question

Quizplus · Accepted Answer

Signal sequences for secreted proteins are typically rich in hydrophobic amino acids, which help target the protein to the endoplasmic reticulum for secretion. Leucine (leu), isoleucine (ile), and valine (val) are all hydrophobic amino acids, making them common in signal sequences.

Which of the Following Sets of Amino Acids Would You