HLA DRA Recombinant Protein Antigen Summary
Description |
A recombinant protein antigen with a N-terminal His6-ABP tag corresponding to human HLA - DRA. Source: E. coli
Amino Acid Sequence: LEIMTKRSNYTPITNVPPEVTVLTNS Fusion Tag: N-terminal His6ABP (ABP = Albumin Binding Protein derived from Streptococcal Protein G)
This product is intended to be used as a blocking antigen for antibody competition assays. Any other use of this antigen is done at the risk of the user. The use of this product for commercial production is strictly prohibited. Please contact technical support if you have any questions. |
Source |
E. coli |
Protein/Peptide Type |
Recombinant Protein Antigen |
Gene |
HLA-DRA |
Purity |
>80% by SDS-PAGE and Coomassie blue staining |
Applications/Dilutions
Dilutions |
- Antibody Competition 10 - 100 molar excess
|
Application Notes |
This recombinant antigen is only intended to be used as a blocking agent to confirm antibody specificity with the corresponding antibody, catalog number NBP2-38619. It is purified by IMAC chromatography, and the expected concentration is greater than 0.5 mg/ml. For current lot information, including availability, please contact our technical support team click nb-technical@bio-techne.com |
Theoretical MW |
21 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
Packaging, Storage & Formulations
Storage |
Store at -20C. Avoid freeze-thaw cycles. |
Buffer |
PBS and 1M Urea, pH 7.4. |
Preservative |
No Preservative |
Purity |
>80% by SDS-PAGE and Coomassie blue staining |
Alternate Names for HLA DRA Recombinant Protein Antigen
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. 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.
Limitations
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are
guaranteed for 3 months from date of receipt.
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