Anti-HLA-DQA2 antibody (STJA0008763)
SPECIFICATIONS
ClonalityPolyclonal
HostRabbit
ConjugationUnconjugated
IsotypeIgG
ImmunogenSynthesized peptide derived from human HLA-DQA2
General Information
| Short Description | Rabbit polyclonal anti-HLA class II histocompatibility antigen, DQ alpha 2 chain alpha chain for use in WB in Human samples. Datasheet included with dilution recommendations, and related reagents. |
| Applications | WB |
| Host | Rabbit |
| Reactivity | Human |
| Note | STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS. |
Product Properties
| Clonality | Polyclonal |
| Isotype | IgG |
| Conjugation | Unconjugated |
| Concentration | 1 mg/mL |
| Purification | The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen. |
| Dilution Range | WB 1:500-2000 |
| Formulation | Liquid in PBS containing 50% Glycerol, 0.5% BSA and 0.02% Sodium Azide. |
| Storage Instruction | Store at-20ยฐC for up to 1 year from the date of receipt, and avoid repeat freeze-thaw cycles. |
Target Information
| Gene Symbol | HLA-DQA2 |
| Gene ID | 3118 |
| Uniprot ID | DQA2_HUMAN |
| Immunogen | Synthesized peptide derived from human HLA-DQA2 |
| Specificity | This antibody detects endogenous levels of HLA-DQA2 at Human |
Additional Info
| Function | 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. |
| Protein Name | Hla Class Ii Histocompatibility Antigen - Dq Alpha 2 ChainDx Alpha ChainHla Class Ii Histocompatibility Antigen - Dq(6 Alpha ChainHla-Dqa1Mhc Class Ii Dqa2 |
| Database Links | Reactome: R-HSA-202424Reactome: R-HSA-202427Reactome: R-HSA-202430Reactome: R-HSA-202433Reactome: R-HSA-2132295Reactome: R-HSA-389948Reactome: R-HSA-877300 |
| Cellular Localisation | Cell MembraneSingle-Pass Type I Membrane ProteinEndoplasmic Reticulum MembraneGolgi ApparatusTrans-Golgi Network MembraneEndosome MembraneLysosome MembraneThe Mhc Class Ii Complex Transits Through A Number Of Intracellular Compartments In The Endocytic Pathway Until It Reaches The Cell Membrane For Antigen Presentation |
| Alternative Antibody Names | Anti-Hla Class Ii Histocompatibility Antigen - Dq Alpha 2 Chain antibodyAnti-Dx Alpha Chain antibodyAnti-Hla Class Ii Histocompatibility Antigen - Dq(6 Alpha Chain antibodyAnti-Hla-Dqa1 antibodyAnti-Mhc Class Ii Dqa2 antibodyAnti-HLA-DQA2 antibodyAnti-HLA-DXA antibody |
Information sourced from Uniprot.org