Recombinant Human Hla Class Ii Histocompatibility Antigen, Dm Beta Chain (HLA-DMB) Protein (His)

Beta LifeScience SKU/CAT #: BLC-09013P
Greater than 85% as determined by SDS-PAGE.
Greater than 85% as determined by SDS-PAGE.

Recombinant Human Hla Class Ii Histocompatibility Antigen, Dm Beta Chain (HLA-DMB) Protein (His)

Beta LifeScience SKU/CAT #: BLC-09013P
Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

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Product Overview

Description Recombinant Human Hla Class Ii Histocompatibility Antigen, Dm Beta Chain (HLA-DMB) Protein (His) is produced by our E.coli expression system. This is a protein fragment.
Purity Greater than 85% as determined by SDS-PAGE.
Uniprotkb P28068
Target Symbol HLA-DMB
Synonyms HLA-DMB; DMB; RING7HLA class II histocompatibility antigen; DM beta chain; MHC class II antigen DMB; Really interesting new gene 7 protein
Species Homo sapiens (Human)
Expression System E.coli
Tag N-6His
Target Protein Sequence GGFVAHVESTCLLDDAGTPKDFTYCISFNKDLLTCWDPEENKMAPCEFGVLNSLANVLSQHLNQKDTLMQRLRNGLQNCATHTQPFWGSLTNRTRPPSVQVAKTTPFNTREPVMLACYVWGFYPAEVTITWRKNGKLVMPHSSAHKTAQPNGDWTYQTLSHLALTPSYGDTYTCVVEHIGAPEPILRDWTPGLSPMQTLK
Expression Range 19-218aa
Protein Length Partial
Mol. Weight 26.4 kDa
Research Area Immunology
Form Liquid or Lyophilized powder
Buffer Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage 1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function Plays a critical role in catalyzing the release of class II-associated invariant chain peptide (CLIP) from newly synthesized MHC class II molecules and freeing the peptide binding site for acquisition of antigenic peptides. In B-cells, the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO.
Subcellular Location Late endosome membrane; Single-pass type I membrane protein. Lysosome membrane; Single-pass type I membrane protein. Note=Localizes to late endocytic compartment. Associates with lysosome membranes.
Protein Families MHC class II family
Database References

HGNC: 4935

OMIM: 142856

KEGG: hsa:3109

STRING: 9606.ENSP00000398890

UniGene: PMID: 26062997

  • Data suggest that antigen processing by MHC class II HLA-DMB antigen is a target pathway in the pathogenesis of HIV-related Kaposi's sarcoma. PMID: 25008864
  • Overexpression of HLA-DM at the plasma membrane of dendritic cells improves quantitatively, but also qualitatively, the presentation of CD4-expressing T cell epitopes in cellular vaccine therapies for cancer. PMID: 21622867
  • HLA-DM mediates a noncooperative release of prebound influenza virus hemagglutinin peptides from wild-type HLA-DR1 by destabilizing the beta81 hydrogen (H-)bond, since a similar phenomenon is observed when this H-bond is absent. PMID: 20038641
  • HLA-DMB may play an important role in pathogenesis of type 1 diabetes, and clinical status heterogeneity of type 1 diabetes may be related to genetic mechanism. PMID: 14754527
  • findings suggest HLA-DM expression in antigen presenting cells controls class II-mediated type II collagen(261-273) peptide/epitope presentation & regulates CD4+ T cell responses to this self epitope, potentially influencing CII-dependent autoimmunity PMID: 18506881
  • Tumor cell expression of HLA-DMB is associated with increased numbers of tumor-infiltrating CD8 T lymphocytes and both are associated with improved survival in advanced-stage serous ovarian cancer. PMID: 19047092
  • No individual component of conserved HLA-DM hydrogen bond network demonstrates an essential role in the DM catalytic mechanism. Catalytic potency of HLA-DM with each beta-chain mutant was equal to or greater than that observed with wild-type HLA-DR1. PMID: 19767569
  • FAQs

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    Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

    Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

    Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

    Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

    To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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