CD3d Proteins

Protein Information

CD3d is part of the T-cell receptor/CD3 complex (TCR/CD3 complex) and is involved in T-cell development and signal transduction. The CD3d protein represents the delta subunit of the CD3 complex, and along with four other CD3 subunits, binds either TCR alpha/beta or TCR gamma/delta to form the TCR/CD3 complex on the surface of T-cells. Defects in the CD3d gene are a cause of severe combined immunodeficiency autosomal recessive T-cell-negative/B-cell-positive/NK-cell-positive (SCIDBNK). Two transcript variants encoding different isoforms of CD3d have been found. Other variants of CD3d may also exist, but the full-length nature of their transcripts have yet to be defined.

Synonyms

CD3 antigen delta polypeptide; CD3 antigen, delta polypeptide; CD3 antigen, delta subunit; CD3 delta; CD3 molecule delta polypeptide; CD3 molecule, delta; CD3D; CD3d antigen, delta polypeptide (TiT3 complex); CD3d molecule; CD3d molecule, delta (CD3-TCR complex); CD3-DELTA; IMD19; OKT3, delta chain; T3D; T-cell receptor T3 delta chain; T-cell surface glycoprotein CD3 delta chain