HLA-DPB1 antibody pair

HLA-DPB1 Antibody Pair

Cat. Num. AAA7042008

• Gene Names: HLA-DPB1; DPB1; HLA-DP; HLA-DPB; HLA-DP1B
• Reactivity: Horse, Pig, Dog, Goat
• Applications: ELISA
• Synonyms: HLA-DPB1; Polyclonal Antibody Pair; HLA-DPB1 Antibody Pair; HLA class II histocompatibility antigen; DP beta 1 chain; DP(W4) beta chain; MHC class II antigen DPB1; HLA-DP1B; HLA-DPB1 antibody pair

• Host: Capture: Rabbit; Detection: Rabbit
• Reactivity: Horse, Pig, Dog, Goat
• Clonality: Polyclonal
• Isotype: Capture: IgG; Detection: IgG
• Form/Format: Liquid
• Concentration: The concentrations and volumes of the antibodies may vary and be lot specific. Details will be on the vial labels. (varies by lot)
• Sequence Length: 258

• Applicable Applications for HLA-DPB1 antibody pair: Sandwich ELISA (EIA)
• Application Notes: We recommend using the capture antibody at a concentration of 0.5ug/ml and the detection antibody at a concentration of 0.25ug/ml.
• Immunogen Species: Human
• Conjugation: Capture: Non-conjugated; Detection: Biotin conjugated
• Recommended Standard: sw1990 cell; HGC-27 cell; (Standards are recommendations only. Compatibility of the standards in the user developed application needs to be established and confirmed by the researcher.
• Storage Buffer: Capture: 50% Glycerol, 0.01M PBS, PH 7.4; Detection: 50% Glycerol, 0.01M PBS, PH 7.4
• Other Note: Immunogen information is company proprietary information. Antibodies are sold as a pair and not available separately.
• Preparation and Storage: Upon delivery aliquot and store at -20 degree C or -80 degree C. Avoid repeated freeze/thaw cycles. When stored properly, products should be stable for at least 5 months.

NCBI and Uniprot Product Information

• NCBI GI #: 24797076
• NCBI GeneID: 3115
• NCBI Accession #: NP_002112.3
• NCBI GenBank Nucleotide #: NM_002121.5
• Molecular Weight: 29,159 Da
• NCBI Official Full Name: HLA class II histocompatibility antigen, DP beta 1 chain
• NCBI Official Synonym Full Names: major histocompatibility complex, class II, DP beta 1
• NCBI Official Symbol: HLA-DPB1
• NCBI Official Synonym Symbols: DPB1; HLA-DP; HLA-DPB; HLA-DP1B
• NCBI Protein Information: HLA class II histocompatibility antigen, DP beta 1 chain
• UniProt Protein Name: HLA class II histocompatibility antigen, DP beta 1 chain
• Protein Family: HLA class II histocompatibility antigen
• UniProt Gene Name: HLA-DPB1
• UniProt Synonym Gene Names: HLA-DP1B
• UniProt Entry Name: DPB1_HUMAN

NCBI Description

HLA-DPB belongs to the HLA class II beta chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DPA) and a beta chain (DPB), both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells (APC: B lymphocytes, dendritic cells, macrophages). The beta chain is approximately 26-28 kDa and its gene contains 6 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, exon 4 encodes the transmembrane domain and exon 5 encodes the cytoplasmic tail. Within the DP molecule both the alpha chain and the beta chain contain the polymorphisms specifying the peptide binding specificities, resulting in up to 4 different molecules. [provided by RefSeq, Jul 2008]

Uniprot Description

HLA-DPB1: Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accommodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route, where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules, and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments, exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides, autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs, other cells of the gastrointestinal tract, such as epithelial cells, express MHC class II molecules and CD74 and act as APCs, which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen, three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form a heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs, CD74 undergoes a sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface. In B-cells, the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO. Primary dendritic cells (DCs) also to express HLA-DO. Lysosomal miroenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading. Belongs to the MHC class II family.

Protein type: Membrane protein, integral

Chromosomal Location of Human Ortholog: 6p21.3

Cellular Component: cell surface; endosome membrane; Golgi membrane; lysosomal membrane; membrane; MHC class II protein complex; plasma membrane; trans-Golgi network membrane

Molecular Function: peptide antigen binding

Biological Process: antigen processing and presentation of exogenous peptide antigen via MHC class II; positive regulation of interferon-gamma production; positive regulation of T cell activation; positive regulation of T cell proliferation; T cell costimulation; T cell receptor signaling pathway