CD81 Antibody

• Catalog Number: orb750088
• Category: Antibodies
• Description: This mAb recognizes a protein of 26kDa, identified as CD81 (Workshop VI; Code CD81.1). CD81 has a very broad cellular distribution, being expressed on T- and B-lymphocytes, NK cells, thymocytes, eosinophils, fibroblasts, epithelial and endothelial cells. Neutrophils, erythrocytes and platelets are negative, while monocytes are variably positive. CD81 is a member of a family of tetraspans transmembrane proteins, including CD9, CD37, CD53, CD63, and CD82. It associates with CD19, CD21, Leu 13, and integrins on cell membrane and is involved in signal transduction in B lymphocyte development and cell adhesion. CD81 also acts as a receptor for the envelope protein E2 of chronic hepatitis C virus. Antibodies to CD81 have anti-proliferative effects on different lymphoid cell lines, particularly those derived from large cell lymphomas.
• Clonality: Monoclonal
• Species/Host: Mouse
• Isotype: Mouse IgG1, kappa
• Conjugation: Unconjugated
• Reactivity: Human, Mouse, Rat
• Immunogen: Recombinant full length human protein was used as the immunogen for the CD81 antibody.
• UniProt ID: P60033
• Tested applications: FACS, Functional Studies, IF, IHC-P, WB
• Dilution range: Functional studies (order BSA/sodium azide-free format),Flow cytometry: 0.5-1ug/million cells,Immunofluorescence: 0.5-1ug/ml,Western blot: 0.5-1ug/ml for 2 hours at RT,Immunohistochemistry (FFPE): 2-4ug/ml for 30 min at RT
• Application notes: Optimal dilution of the CD81 antibody should be determined by the researcher.
• Antibody Type: Primary Antibody
• Clone Number: 1.3.3.22
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide
• 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.
• Hazard Information: This CD81 antibody is available for research use only.
• Note: For research use only

IHC testing of FFPE human tonsil with CD81 antibody (clone 1.3.3.22). Required HIER: boil tissue sections in 10mM citrate buffer, pH6, for 10-20 min followed by cooling at RT for 20 min.

IHC testing of FFPE human lymph node with CD81 antibody (clone 1.3.3.22). Required HIER: boil tissue sections in 10mM citrate buffer, pH6, for 10-20 min followed by cooling at RT for 20 min.

Flow cytometry analysis of bead-bound exosomes derived from MCF-7 cells using CD81 antibody (clone 1.3.3.22). Gray = unstained cells, Orange = CD81 antibody.

Flow cytometry staining of human MCF7 cells with CD81 antibody; Gray = unstained cells, Orange = CD81 antibody.