HLA-DPB1 Antibody - #DF6408
|Application:||WB, IHC, IF/ICC|
|Reactivity:||Human, Mouse, Rat|
*The optimal dilutions should be determined by the end user.
WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.
Cite Format: Affinity Biosciences Cat# DF6408, RRID:AB_2838371.
D6S221E; DMA; DMB; DP beta 1; DP beta 1 chain; DP(W4) beta chain; DPB 1; DPB1; DPB1_HUMAN; DRB; H2Ea; HLA class II histocompatibility antigen; HLA class II histocompatibility antigen DM beta chain; HLA class II histocompatibility antigen, DP beta 1 chain; HLA class II histocompatibility antigen, DP(W4) beta chain; HLA DMB; HLA DP1A; HLA DPB1; HLA SB alpha chain; HLA-A; HLA-A histocompatibility type; HLA-DP; HLA-DP histocompatibility type, beta-1 subunit; HLA-DP1B; HLA-DPB; HLA-DPB1; HLADM; HLADP1B; HLASB; HLASB histocompatibility type; Human MHC class II HLA SB alpha; LA class II histocompatibility antigen DP alpha 1 chain; Major histocompatibility complex class II; Major histocompatibility complex class II DP alpha 1; Major histocompatibility complex class II DP beta 1; Major histocompatibility complex, class I, A; MHC class II antigen DMB; MHC class II antigen DPB1; MHC class II DP3 alpha; MHC class II DPA1; MHC class II HLA-DP-beta-1; MHC DPB1; MHC HLA DPB1; PLT1; Primed lymphocyte test 1; RING6; RING7;
- P04440 DPB1_HUMAN:
- Protein BLAST With
PTMs - P04440 As Substrate
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 microenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading.
Cell membrane>Single-pass type I membrane protein. Endoplasmic reticulum membrane>Single-pass type I membrane protein. Golgi apparatus>trans-Golgi network membrane>Single-pass type I membrane protein. Endosome membrane>Single-pass type I membrane protein. Lysosome membrane>Single-pass type I membrane protein.
Note: The MHC class II complex transits through a number of intracellular compartments in the endocytic pathway until it reaches the cell membrane for antigen presentation.
Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule. In the endoplasmic reticulum (ER) it forms a heterononamer; 3 MHC class II molecules bind to a CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). In the endosomal/lysosomal system; CD74 undergoes sequential degradation by various proteases; leaving a small fragment termed CLIP on each MHC class II molecule. MHC class II molecule interacts with HLA_DM, and HLA_DO in B-cells, in order to release CLIP and facilitate the binding of antigenic peptides.
Belongs to the MHC class II family.
· Cellular Processes > Transport and catabolism > Phagosome. (View pathway)
· Environmental Information Processing > Signaling molecules and interaction > Cell adhesion molecules (CAMs). (View pathway)
· Human Diseases > Endocrine and metabolic diseases > Type I diabetes mellitus.
· Human Diseases > Infectious diseases: Parasitic > Leishmaniasis.
· Human Diseases > Infectious diseases: Parasitic > Toxoplasmosis.
· Human Diseases > Infectious diseases: Bacterial > Staphylococcus aureus infection.
· Human Diseases > Infectious diseases: Bacterial > Tuberculosis.
· Human Diseases > Infectious diseases: Viral > Influenza A.
· Human Diseases > Infectious diseases: Viral > HTLV-I infection.
· Human Diseases > Infectious diseases: Viral > Herpes simplex infection.
· Human Diseases > Infectious diseases: Viral > Epstein-Barr virus infection.
· Human Diseases > Immune diseases > Asthma.
· Human Diseases > Immune diseases > Autoimmune thyroid disease.
· Human Diseases > Immune diseases > Inflammatory bowel disease (IBD).
· Human Diseases > Immune diseases > Systemic lupus erythematosus.
· Human Diseases > Immune diseases > Rheumatoid arthritis.
· Human Diseases > Immune diseases > Allograft rejection.
· Human Diseases > Immune diseases > Graft-versus-host disease.
· Human Diseases > Cardiovascular diseases > Viral myocarditis.
· Organismal Systems > Immune system > Antigen processing and presentation. (View pathway)
· Organismal Systems > Immune system > Hematopoietic cell lineage. (View pathway)
· Organismal Systems > Immune system > Th1 and Th2 cell differentiation. (View pathway)
· Organismal Systems > Immune system > Th17 cell differentiation. (View pathway)
· Organismal Systems > Immune system > Intestinal immune network for IgA production. (View pathway)
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