| Post Translational Modifications | Phosphorylated on serine, threonine and tyrosine residues following TCR stimulation. Phosphorylated by LCK on Tyr-452 and Tyr-486 upon TCR engagement. |
| Function | Lymphoid-specific receptor expressed by all T-cells and in a subset of B-cells known as B1a cells. Plays a role in the regulation of TCR and BCR signaling, thymocyte selection, T-cell effector differentiation and immune tolerance. Acts by interacting with several ligands expressed on B-cells such as CD5L or CD72 and thereby plays an important role in contact-mediated, T-dependent B-cell activation and in the maintenance of regulatory T and B-cell homeostasis. Functions as a negative regulator of TCR signaling during thymocyte development by associating with several signaling proteins including LCK, CD3Z chain, PI3K or CBL. Mechanistically, co-engagement of CD3 with CD5 enhances phosphorylated CBL recruitment leading to increased VAV1 phosphorylation and degradation. Modulates B-cell biology through ERK1/2 activation in a Ca(2+)-dependent pathway via the non-selective Ca(2+) channel TRPC1, leading to IL-10 production. |
| Protein Name | T-Cell Surface Glycoprotein Cd5Lymphocyte Antigen 1Ly-1Lyt-1Cd Antigen Cd5 |
| Database Links | |
| Cellular Localisation | Cell MembraneSingle-Pass Type I Membrane Protein |
| Alternative Antibody Names | Anti-T-Cell Surface Glycoprotein Cd5 antibodyAnti-Lymphocyte Antigen 1 antibodyAnti-Ly-1 antibodyAnti-Lyt-1 antibodyAnti-Cd Antigen Cd5 antibodyAnti-Cd5 antibodyAnti-Ly-1 antibody |
Information sourced from Uniprot.org
![C57BL/6 murine splenocytes were stained with Anti-CD5 antibody (STJA0001020) [Used at 0.2 µg/10<sup>6</sup> cells dilution] (filled gray histogram). Unstained splenocytes (empty black histogram) were used as control.](https://cdn11.bigcommerce.com/s-zso2xnchw9/images/stencil/600x533/products/145873/292530/STJA0001020_1__44027.1631206398.jpg?c=1 "C57BL/6 murine splenocytes were stained with Anti-CD5 antibody (STJA0001020) [Used at 0.2 µg/10<sup>6</sup> cells dilution] (filled gray histogram). Unstained splenocytes (empty black histogram) were used as control.")
![C57BL/6 murine splenocytes were stained with Anti-CD5 antibody (STJA0001021) [Used at 0.05 µg/10<sup>6</sup> cells dilution] (filled gray histogram). Unstained splenocytes (empty black histogram) were used as control.](https://cdn11.bigcommerce.com/s-zso2xnchw9/images/stencil/600x533/products/145874/292531/STJA0001021_1__96055.1631206399.jpg?c=1 "C57BL/6 murine splenocytes were stained with Anti-CD5 antibody (STJA0001021) [Used at 0.05 µg/10<sup>6</sup> cells dilution] (filled gray histogram). Unstained splenocytes (empty black histogram) were used as control.")
