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Home Recombinant Human Proteins All HLA Proteins

HLA (NM_002124) Purified Human Protein

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Cat. No. Description Datasheet Price Availability*  
TP318764 Recombinant protein of human major histocompatibility complex, class II, DR beta 1 (HLA-DRB1), 20 ug (Larger pack size?) $680 In Stock
TA308896 Rabbit polyclonal antibody to HLA-DRB1 (major histocompatibility complex, class II, DR beta 1) $325 3-7 Days
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OriGene Data
Species:Human Expression Host:HEK293 cells
Expression cDNA Clone or AA Sequence
Recombinant protein was produced with TrueORF clone, RC218764. Click on the TrueORF clone link to view cDNA and protein sequences.
Tag:C-terminal MYC/DDK Predicted MW:27 kDa
Purity:> 80% as determined by SDS-PAGE and Coomassie blue staining
Concentration:>50 ug/mL as determined by microplate BCA method
Buffer:25 mM Tris.HCl, pH 7.3, 100 mM glycine, 10% glycerol.
Preparation: Recombinant protein was captured through anti-DDK affinity column followed by conventional chromatography steps.
Protein Families: Transmembrane
Protein Pathways: Cell adhesion molecules (CAMs)Antigen processing and presentationHematopoietic cell lineageType I diabetes mellitusAsthmaAutoimmune thyroid diseaseMore Pathways >>
Protein Data
Protein Image
 

Reference Data
RefSeq: NP_002115 RefSeq Size: 1182 RefSeq ORF: 801
LocusID: 3123 Cytogenetic: 6p21.32  
Synonyms : DRB1; DRw10; HLA-DR1B; HLA-DRB; SS1
Summary: 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-ce [UniProtKB/Swiss-Prot Function]
*: Inventory for certain proteins may be limited due to low expression level. Delivery time may vary from web posted schedule. Contact techsupport@origene.com for specific inventory information
**: DDK-tag is the same as FLAG tag. Flag® is a registered trademark of Sigma-Aldrich

 

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