T cell receptor alpha joining 31 (TRAJ31)

T cell receptor alpha joining 31 (TRAJ31) is a standardized gene segment within the *T cell receptor alpha (TCRα)* locus, found on human chromosome 14[2][3][8]. The TRAJ segments (joining segments) are DNA sequences used during the process of somatic V(D)J recombination, which occurs in developing T lymphocytes to create a diverse repertoire of T cell receptors capable of recognizing a wide array of antigens[7]. TRAJ31 itself is not a protein, nor is it a standalone receptor or molecule targeted by drugs. Rather, it is a short nucleotide sequence that contributes to the diversity of the antigen-binding region in assembled T cell receptors[8]. This gene segment does not serve as a therapeutic target and is not associated directly with disease, though the T cell receptor as a whole plays a crucial role in adaptive immunity. Note on correctness: TRAJ31 is *not* a protein, receptor, enzyme, or drug target but a recombination gene segment. Queries intending this as a drug target are **incorrect**; for drug targeting, one should refer to the full T cell receptor complex or its functional chains (such as TCRα or TCRβ), not the individual joining segments[2][3][5][8].

Other names

T cell receptor α joining 31TRAJ31

Not applicable (not targeted by drugs; enables assembly of functional T cell receptor via recombination)