Antibodies bind antigens at
A)light chains.
B)heavy chains.
C)hypervariable regions.
D)glycoprotein regions.
E)All of the above.

Question

Quizplus · Accepted Answer

Antibodies bind antigens at the hypervariable regions, which are also known as the complementary determining regions (CDRs). These regions are part of the variable domains on the antigen-binding site of the antibody's heavy and light chains. The CDRs contain amino acid sequences that are highly variable and can specifically recognize and bind to different antigens. Therefore, CDRs are responsible for the specificity and diversity of antibody-antigen interactions. Heavy and light chains have other regions, such as the constant domains, that have less variability and play different roles in antibody function.

Antibodies Bind Antigens at