T cell receptor beta joining 1-4 (TRBJ1-4)

T cell receptor beta joining 1-4 (TRBJ1-4) is a J gene segment within the TCR β-chain locus. During T cell development in the thymus, variable (V), diversity (D), and joining (J) segments recombine to generate the full exon encoding the β-chain variable region of the T cell receptor. TRBJ1-4 contributes to the hypervariable complementarity-determining region 3 (CDR3) of the TCR, which is critical for antigen specificity[5][6][9]. This process is essential for producing the diverse repertoire of T cells capable of recognizing many different antigens presented by major histocompatibility complex (MHC) molecules[1]. TRBJ1-4 itself is not a receptor or protein—it is a genomic sequence incorporated into mature TCRs if selected during recombination[8].\n\nNote:\n- This is not a canonical protein, receptor, or enzyme target, but a gene segment.[5]\n- The presence of aliases referring to different segments (e.g., TRBJ14) suggests possible confusion or error.\n- It is not directly targetable nor does it possess a typical molecular classification of therapeutic proteins.

Other names

T cell receptor beta joining 1-4TRBJ1-4TCRBJ1S4