The T-cell receptor for antigen comprises which of the following molecules?

Question

Quizplus · Accepted Answer

The T-cell receptor for antigen is a heterodimer composed of two polypeptide chains, namely alpha and beta chains. These chains are responsible for recognizing and binding to the antigen presented by major histocompatibility complex (MHC) molecules on the antigen-presenting cells (APCs). Option B is incorrect because T-cell receptors can also consist of two gamma and two delta chains, which are usually found on a subset of T-cells called gamma-delta T-cells. Option C is incorrect because these chains are associated with the IgE receptor, not the T-cell receptor. Option D is incorrect because beta-2-microglobulin is associated with MHC class I molecules, not the T-cell receptor.

The T-Cell Receptor for Antigen Comprises Which of the Following