Which of the following pair of amino acids can form a salt bridge?
A) alanine and glutamic acid
B) aspartic acid and lysine
C) leucine and phenylalanine
D) serine and tyrosine

Question

Quizplus · Accepted Answer

Aspartic acid is negatively charged at physiological pH, and lysine is positively charged. These opposite charges can interact to form a salt bridge. The other pairs do not have a charged amino acid that can participate in salt bridge formation.

Which of the Following Pair of Amino Acids Can Form