JavaScript is currently not supported/disabled by this browser. Please enable JavaScript for full functionality.
Loding Loading ....
Home / Primary Antibodies / IHC Antibodies

HLA-DRA Antibody

BHA10557229
Contact us to order
Tel
+1 866.986.9598
Email
orders@biohippo.com
Get a Quote
Request More Infos
Order Now

Credit card payments now incur a 3% fee.

Contact us to order
Tel
+1 866.986.9598
Email
orders@biohippo.com
Get a Quote
Ask Merchant
Request More Infos
Sample Request
Rgd 1593283
Target Details HLA-DRA is one of the HLA class II alpha chain paralogues. This class II molecule is a heterodimer consisting of an alpha and a beta chain, 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 alpha chain is approximately 33-35 kDa and its 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.
Uniprot P01903
Database Links

HGNC:4947

OMIM:142860

KEGG:hsa:3122

STRING:9606.ENSP00000378786

UniGene:Hs.520048
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.
Pathway Antigen processing and presentation Hematopoietic cell lineage Th1 and Th2 cell differentiation Th17 cell differentiation
Protein Families MHC class II family
Research Area Immunology
Buffer Buffer: PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Format liquid
Purification Affinity purification
Purity Affinity purification
Storage Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Storage Buffer

Store at -20oC or -80oC. Avoid freeze / thaw cycles. Buffer: PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Applications ELISA, WB, IHC
Description ELISA ; WB ; IHC, WB ; ELISA ; IHC
Dilution

WB1:500-1:2000
IHC1:50-1:200
Tested Application ELISA,WB,IHC;WB:1:500-1:2000,IHC:1:50-1:200
Datasheet
ELISA Protocol
Western Blotting(WB) Protocol
Immunohistochemistry (IHC) Protocol
SKU Supplier No. Size Your price Quantity
BHA10557229 CSB-PA010497KA01HU 100μl $387.33
Add to Cart