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| Reactivity: | Human, Rat |
| Applications: | WB, IHC, ELISA |
| Host Species: | Rabbit |
| Isotype: | IgG |
| Clonality: | Polyclonal antibody |
| Gene Name: | major histocompatibility complex, class II, DR alpha |
| Gene Symbol: | HLA-DRA |
| Synonyms: | HLA-DRA1; HLA-DRA |
| Gene ID: | 3122 |
| UniProt ID: | P01903 |
| Immunogen: | Recombinant fusion protein containing a sequence corresponding to amino acids 26-216 of human HLA-DRA (NP_061984.2). |
| Dilution: | WB 1:500-1:2000; IHC 1:50-1:200 |
| Purification Method: | Affinity purification |
| Concentration: | 2.89 mg/ml |
| Buffer: | PBS with 0.09% Sodium azide, 50% glycerol, pH7.3. |
| Storage: | Store at -20°C. Avoid freeze/thaw cycles. |
| Documents: | Manual-HLA-DRA antibody |
Background
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. This molecule is expressed on the surface of various antigen presenting cells such as B lymphocytes, dendritic cells, and monocytes/macrophages, and plays a central role in the immune system and response by presenting peptides derived from extracellular proteins, in particular, pathogen-derived peptides to T cells. 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.
Images
 | Western blot analysis of various lysates using HLA-DRA Rabbit pAb (A11787) at 1:1000 dilution. Secondary antibody: HRP-conjugated Goat anti-Rabbit IgG (H+L) (AS014) at 1:10000 dilution. Lysates/proteins: 25μg per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit (RM00020). Exposure time: 90s. |
 | Immunohistochemistry analysis of paraffin-embedded Human liver using HLA-DRA Rabbit pAb (A11787) at dilution of 1:100 (40x lens). Microwave antigen retrieval performed with 0.01M PBS Buffer (pH 7.2) prior to IHC staining. |
 | Immunohistochemistry analysis of paraffin-embedded Human liver cancer using HLA-DRA Rabbit pAb (A11787) at dilution of 1:100 (40x lens). Microwave antigen retrieval performed with 0.01M PBS Buffer (pH 7.2) prior to IHC staining. |
 | Immunohistochemistry analysis of paraffin-embedded Rat lung using HLA-DRA Rabbit pAb (A11787) at dilution of 1:100 (40x lens). Microwave antigen retrieval performed with 0.01M PBS Buffer (pH 7.2) prior to IHC staining. |
 | Immunohistochemistry analysis of paraffin-embedded Rat spleen using HLA-DRA Rabbit pAb (A11787) at dilution of 1:100 (40x lens). Microwave antigen retrieval performed with 0.01M PBS Buffer (pH 7.2) prior to IHC staining. |
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