Key features and details
- Rabbit polyclonal to HLA-DPB1
- Suitable for: WB
- Reacts with: Mouse, Rat, Human
- Isotype: IgG
Product nameAnti-HLA-DPB1 antibody
See all HLA-DPB1 primary antibodies
DescriptionRabbit polyclonal to HLA-DPB1
Tested applicationsSuitable for: WBmore details
Species reactivityReacts with: Mouse, Rat, Human
Recombinant full length protein corresponding to Human HLA-DPB1.
Database link: P04440
- U937 and THP1 cell lysates; mouse spleen and thymus lysates.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.
Storage bufferpH: 7.20
Preservative: 0.05% Sodium azide
Constituent: 99% PBS
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab193392 is affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE).
Our Abpromise guarantee covers the use of ab193392 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||Use at an assay dependent concentration. Predicted molecular weight: 29 kDa.|
FunctionBinds 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.
Sequence similaritiesBelongs to the MHC class II family.
Contains 1 Ig-like C1-type (immunoglobulin-like) domain.
Cellular localizationCell membrane. Endoplasmic reticulum membrane. Golgi apparatus, trans-Golgi network membrane. Endosome membrane. Lysosome membrane. 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.
- Information by UniProt
- beta1 domain MHC class II HLA DPB antibody
- class II histocompatibility antigen, DP(W4) beta chain antibody
- class II HLA beta chain antibody
ab193392 has not yet been referenced specifically in any publications.