T cell receptor alpha variable 8-3 (TRAV8-3)

T cell receptor alpha variable 8-3 (TRAV8-3) encodes one of the many variable regions (V segments) of the TCR alpha chain, a component essential for the antigen specificity of T cells. The TCR is a membrane-anchored heterodimer (usually alpha and beta chains) expressed on T lymphocytes, where it recognizes antigenic peptides presented by major histocompatibility complex (MHC) molecules. TRAV8-3 contributes to the variable (V) region of this chain, enabling the enormous diversity necessary for immune surveillance. While the overall TCR structure—including its signaling (via CD3 complex) and central functional role—is a major immunotherapeutic target (such as in TCR-engineered cell therapies), individual V gene segments like TRAV8-3 are not themselves therapeutic targets, but rather building blocks of TCR diversity[1][2][3].

Other names

TRAV8-3TCRAV1S4TCRAV8S3TRAV83