Which T-cell surface protein is associated with the T-cell receptor and is involved in signal transduction?

Question

Quizplus · Accepted Answer

CD3 is the T-cell surface protein that is associated with the T-cell receptor and is involved in signal transduction. The T-cell receptor recognizes and binds to specific antigens presented by antigen-presenting cells, and then CD3 activates downstream signaling pathways leading to T-cell activation and immune response. CD4 and CD8 are co-receptors on T-cells that interact with MHC class II and MHC class I molecules, respectively, to enhance T-cell activation. CD154 (also known as CD40 ligand) is a protein on activated T-cells that interacts with CD40 on antigen-presenting cells, providing important co-stimulatory signals for T-cell activation and differentiation.

Which T-Cell Surface Protein Is Associated with the T-Cell Receptor