At their isoelectric point proteins have:
A) no ionized groups.
B) no positively charged groups.
C) no negatively charged groups.
D) equal numbers of positively and negatively charged groups.
E) an increased affinity for substrate.

Question

Quizplus · Accepted Answer

At their isoelectric point, proteins have equal numbers of positively and negatively charged groups, resulting in a net charge of zero.

At Their Isoelectric Point Proteins Have