HLA-DR Antibodies

Target Information

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. HLA and MHC antibodies play a significant role in Immunopeptidomics, facilitating the identification and characterization of neoantigens through high-performance liquid chromatography coupled to tandem Mass Spectrometry.

Synonyms

AI323765; BLA-DRB3; BOLA-DRA; BoLA-DR-alpha; BoLA-DRB; BOLA-DRB3; BoLA-DRB3 protein; BoLA-DRB3.2; Bota-DRB01; Bota-DRB02; Bota-DRB04; Bota-DRB07; Bota-DRB21; Bota-DRB22; bovine leukocyte antigen; Cd74; CD74 antigen; CD74 antigen (invariant polypeptide of major histocompatibility complex, class II antigen-associated); CD74 molecule; Cd74 molecule, major histocompatibility complex, class II invariant chain; class II-associated invariant chain peptide; CLIP; Clone P2-beta-3; DASS-397D15.1; DHLAG; dinucleotide microsatellite; DLA class II histocompatibility antigen, DR-1 beta chain; DLA DRBB1 beta chain; DLA-DR beta; DLA-DRB1; DLA-DRBB1; DR beta-5; DR beta-chain antigen binding domain; DR-16; DR2-beta-2; DR4; DR-4; DR7; DR9; DR-9; DRB; DRB1; DRB1 transplantation antigen; DRB3; DRB4; DRBB1; DR-beta chain; DR-beta chain MHC class II; DRw10; Dw2; DW2.2/DR2.2; E-alpha-f; FLJ51114; FLJ75017; FLJ76359; gamma chain of class II antigens; H-2 class II histocompatibility antigen gamma chain; H-2 class II histocompatibility antigen, E-D alpha chain; H-2 class II histocompatibility antigen, E-K alpha chain; H-2 class II histocompatibility antigen, E-U alpha chain; H-2Ea; H2-Ea; H2-Ea-ps; H2-IE-alpha; histocompatibility 2, class II antigen E alpha; histocompatibility 2, class II antigen E alpha, pseudogene; histocompatibility antigen HLA-DR alpha; histocompatibility complex, class II, DR beta 3; histocompatibility: class II antigens, gamma chain of; HLA class II histocompatibility antigen gamma chain; HLA class II histocompatibility antigen, DR alpha chain; HLA class II histocompatibility antigen, DR beta 3 chain; HLA class II histocompatibility antigen, DR beta 4 chain; HLA class II histocompatibility antigen, DR beta 5 chain; HLA class II histocompatibility antigen, DR-1 beta chain; HLA class II histocompatibility antigen, DR-5 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 class II histocompatibility antigen, DRB1-7 beta chain; HLA class II histocompatibility antigen, DRB1-9 beta chain; HLADG; HLA-DR antigens-associated invariant chain; HLA-DR1B; HLA-DR3B; HLA-DR4B; HLA-DRA; HLA-DRA1; HLA-DRB; HLA-DRB1; HLA-DRB2; HLA-DRB3; HLA-DRB4; HLA-DRB5; HLA-DR-gamma; human leucocyte antigen DRB1; human leucocyte antigen DRB3; human leucocyte antigen DRB4; human leucocyte antigen DRB5; ia antigen-associated invariant chain; Ia3; Ia-3; Ia-associated invariant chain; Ia-GAMMA; I-E alpha MHC class II; I-Ealpha; II; integral membrane glycoprotein; invariant gamma chain; invariant polypeptide of major histocompatibility complex, class II antigen-associated; INVG34; LA-DRB; leukocyte antigen; leukocyte antigen class II; leukocyte antigen DRB3; lymphocyte antigen DRB1; major histocompatibility complex class II DR-beta chain; major histocompatibility complex, class II, DR alpha; major histocompatibility complex, class II, DR alpha precursor; major histocompatibility complex, class II, DR beta 1; major histocompatibility complex, class II, DR beta 3; major histocompatibility complex, class II, DR beta 4; major histocompatibility complex, class II, DR beta 4 precursor; major histocompatibility complex, class II, DR beta 5; major histocompatibility complex, class II, DRB3; MHC cell surface glycoprotein; MHC class I antigen; MHC class II antigen; MHC class II antigen beta chain; MHC class II antigen BoLA-DRB3; MHC class II antigen DR beta 3 chain; MHC class II antigen DRA; MHC class II antigen DRB1*15; MHC class II antigen DRB1*16; MHC class II antigen DRB1*3; MHC class II antigen DRB1*9; MHC class II antigen DRB3; MHC class II antigen DRB4; MHC class II antigen DRB5; MHC class II antigen E alpha; MHC class II antigen HLA-DR-beta; MHC class II DLA DRB1 beta chain; MHC class II DLA-DRB; MHC class II DLA-DR-beta-1; MHC class II DR beta 1; MHC class II DR beta chain; MHC class II DR beta-chain; MHC class II DR-ALPHA