HLA-DRB1 Antibody (MHC II)

• Catalog Number: orb2641772
• Category: Antibodies
• Description: HLA-DRB1 belongs to the HLA class II beta chain paralogs. The class II molecule is a heterodimer consisting of an alpha (DRA) and a beta chain (DRB), 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 beta chain is approximately 26-28 kDa. It is encoded by 6 exons. Exon one encodes the leader peptide; exons 2 and 3 encode the two extracellular domains; exon 4 encodes the transmembrane domain; and exon 5 encodes the cytoplasmic tail. Within the DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Hundreds of DRB1 alleles have been described and typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. [RefSeq]
• Species/Host: Mouse
• Clonality: Monoclonal
• Clone Number: MHDRb2
• Tested applications: FACS, IF, IHC-P, WB
• Reactivity: Human
• Isotype: Mouse IgG2b, kappa
• Immunogen: Activated human peripheral blood mononuclear cells were used as the immunogen for the HLA-DRB1 antibody.
• Antibody Type: Primary Antibody
• Dilution range: Flow Cytometry: 1-2ug/million cells in 0.1ml,Immunofluorescence: 2-4ug/ml,Western blot: 1-2ug/ml,Immunohistochemistry (FFPE): 0.5-1ug/ml for 30 min at RT,Prediluted IHC only format: incubate for 30 min at RT (1)
• Purity: Protein G affinity chromatography
• Conjugation: Unconjugated
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide
• Hazard Information: This HLA-DRB1 antibody is available for research use only.
• UniProt ID: P01911
• Storage: Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
• Buffer/Preservatives: 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin (US sourced) and 0.05% sodium azide
• Note: For research use only
• Application notes: Optimal dilution of the HLA-DRB1 antibody should be determined by the researcher.1. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.
• Expiration Date: 12 months from date of receipt.

IHC testing of FFPE human tonsil and HLA-DRB1 antibody (clone MHDRb2). Staining of formalin-fixed tissues is enhanced by boiling tissue sections in pH9 10 mM Tris with 1 mM EDTA for 10-20 min followed by cooling at RT for 20 min.

IHC testing of FFPE human histiocytoma and HLA-DRB1 antibody (clone MHDRb2). Staining of formalin-fixed tissues is enhanced by boiling tissue sections in pH9 10 mM Tris with 1 mM EDTA for 10-20 min followed by cooling at RT for 20 min.

Western blot testing of Ramos lysate and HLA-DRB1 antibody. Predicted molecular weight ~30 kDa.

FACS staining of Raji cells with HLA-DRB1 antibody (clone MHDRb2); Red = isotype control, Blue = HLA-DRB1 antibody.

Immunofluorescent staining of Raji cells with HLA-DRB1 antibody (green, clone MHDRb2) and Reddot nuclear stain (red).