Commonly used, FITC conjugates provide relatively high absorptivity, excellent fluorescence quantum yield, and good water solubility.
HLA-DR, like other MHC class II molecules, is a transmembrane glycoprotein composed of a 36 kDa alpha chain (DRA) and 27 kDa beta chain (DRB). The alpha chain gene contains 5 exons. Exon 1 encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, and exon 4 encodes the transmembrane domain and the cytoplasmic tail. DRA does not have polymorphisms in the peptide binding part and acts as the sole alpha chain for DRB1, DRB3, DRB4 and DRB5. Within the DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Hundreds of DRB1 alleles have been described and typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. HLA-DR is expressed primarily on antigen presenting cells such as B lymphocytes, monocytes, macrophages, thymic epithelial cells and activated T lymphocytes. Three loci, DR, DQ and DP, encode the major expressed products of the human class II region. The human MHC class II molecules bind intracellularly processed peptides, present them to T-helper cells, and have a critical role in the initiation of the immune response.
Analyte Specific Reagent
Protein Aliases: Clone P2-beta-3; DR alpha chain; DR-16; DW2.2/DR2.2; histocompatibility antigen HLA-DR alpha; HLA class II histocompatibility antigen; HLA class II histocompatibility antigen, DR-1 beta chain; HLA class II histocompatibility antigen, DRB1-15 beta chain; HLA class II histocompatibility antigen, DRB1-16 beta chain; HLA class II histocompatibility antigen, DRB1-3 chain; HLA-DRA1; human leucocyte antigen DRB1; lymphocyte antigen DRB1; MHC cell surface glycoprotein; MHC class II antigen; MHC class II antigen DRB1*15; MHC class II antigen DRB1*16; MHC class II antigen DRB1*3; MHC class II HLA-DR beta 1 chain; MHC class II HLA-DR-beta cell surface glycoprotein; MHC class II HLA-DRw10-beta; MLRW
Gene Aliases: DRB1; DRw10; HLA-DR1B; HLA-DRB; HLA-DRB1; HLA-DRB2; SS1
UniProt ID: (Human) P01911
Entrez Gene ID: (Human) 3123