Description: The B-Ly7 monoclonal antibody reacts with human CD103, the alpha E integrin. CD103 non-covalently associates with integrin beta 7. CD103 is expressed mainly on intraepithelial lymphocytes and a small subset of peripheral lymphocytes. CD103 is also expressed by hairy cell leukemia (HCL) and by some chronic B cell lymphocytic leukemias. In vitro stimulation of human T cells with mitogens induces upregulation of CD103. Epithelial cell antigen, E-cadherin, binds to CD103 and mediates homing of lymphocytes to the intestinal epithelium.
Applications Reported: This B-Ly7 antibody has been reported for use in flow cytometric analysis.
Applications Tested: This B-Ly7 antibody has been pre-titrated and tested by flow cytometric analysis of stimulated normal human peripheral blood cells. This can be used at 5 µL (0.125 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.
Excitation: 633-647 nm; Emission: 660 nm; Laser: Red Laser.
Filtration: 0.2 µm post-manufacturing filtered.
The CD103 antigen is a 160-130-105 kDa molecule which is expressed on mucosa-associated T lymphocytes and activated cells and on subet of TGF beta -1 cells. This human intra epithelial lymphocyte marker is the E integrin chain associated with the b7 subunit. CD103 antibody stains a few bone marrow cells and, rarely, peripheral blood lymphocytes. CD103 is expressed by 0.5 to 2% of resting lymphocytes in peripheral blood and lymphoid organs.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: antigen CD103; antigen CD103, human mucosal lymphocyte antigen 1; alpha polypeptide; CD103; HML-1 antigen; human mucosal lymphocyte antigen 1, alpha polypeptide; integrin alpha E; Integrin alpha-E; Integrin alpha-E heavy chain; Integrin alpha-E light chain; Integrin alpha-IEL; integrin, alpha E (antigen CD103, human mucosal lymphocyte antigen 1; alpha polypeptide); Mucosal lymphocyte 1 antigen
Gene Aliases: CD103; HUMINAE; ITGAE
UniProt ID: (Human) P38570
Entrez Gene ID: (Human) 3682