Which of the following correctly lists the isoelectric pH's of asp, asn, and arg from lowest to highest?

A) D N R
B) D R N
C) R N D
D) R D N
E) N R D
F) N D R

Question

Which of the following correctly lists the isoelectric pH's of asp, asn, and arg from lowest to highest?

A) D N R
B) D R N
C) R N D
D) R D N
E) N R D
F) N D R

Quizplus · Accepted Answer

Asp (aspartic acid) has the lowest isoelectric pH because it is an acidic amino acid. Arg (arginine) has the highest isoelectric pH because it is a basic amino acid. Asn (asparagine) is neutral, so its isoelectric pH falls between the two.

Which of the Following Correctly Lists the Isoelectric PH's of Asp