![Knockout Validated: CD81 Antibody (1.3.3.22) [NBP2-53318] - CD81 was detected in immersion fixed HeLa human cervical epithelial carcinoma cell line but is not detected in CD81 knockout (KO) HeLa cell line using Mouse Anti-Human CD81 Monoclonal Antibody (Catalog # NBP2-53318) at 1 ug/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to the plasma membrane.](http://images.novusbio.com/fullsize/CD81-Antibody-1-3-3-22-Knockout-Validated-NBP2-53318-img0005.jpg "Knockout Validated: CD81 Antibody (1.3.3.22) [NBP2-53318] - CD81 was detected in immersion fixed HeLa human cervical epithelial carcinoma cell line but is not detected in CD81 knockout (KO) HeLa cell line using Mouse Anti-Human CD81 Monoclonal Antibody (Catalog # NBP2-53318) at 1 ug/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to the plasma membrane.")
| Reactivity | Hu, Mu, RtSpecies Glossary |
| Applications | WB, Flow, ICC/IF, IHC, KO, Single-Cell Western |
| Clone | 1.3.3.22 |
| Clonality | Monoclonal |
| Host | Mouse |
| Conjugate | Unconjugated |
| Concentration | 0.2 mg/ml |
| Description | 200ug/ml of antibody purified from Bioreactor Concentrate by Protein A or G. Prepared in 10 mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0 mg/ml. (NBP2-54548) Antibody with azide - store at 2 to 8C. Antibody without azide - store at -20 to -80C. |
| Immunogen | Recombinant full-length human CD81 protein (Uniprot: P60033) |
| Localization | Cell surface |
| Specificity | 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. |
| Isotype | IgG1 Kappa |
| Clonality | Monoclonal |
| Host | Mouse |
| Gene | CD81 |
| Purity | Protein A or G purified |
| Innovator's Reward | Test in a species/application not listed above to receive a full credit towards a future purchase. |
| Dilutions |
|
|
| Application Notes | Immunohistochemistry (Formalin-fixed): 2-4ug/ml for 30 minutes at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95C followed by cooling at RT for 20 minutes. Optimal dilution for a specific application should be determined. Western Blot: 1-2ug/ml for 2 hours at RT. |
|
| Theoretical MW | 26 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. |
|
| Publications |
|
| Storage | Store at 4C. |
| Buffer | 10 mM PBS with 0.05% BSA |
| Preservative | 0.05% Sodium Azide |
| Concentration | 0.2 mg/ml |
| Purity | Protein A or G purified |
Secondary Antibodies |
Isotype Controls |
Research Areas for CD81 Antibody (NBP2-53318)Find related products by research area.
|
|
Glypican 3 as a biomarker for gastro-esophageal adenocarcinoma By Jamshed Arslan, Pharm. D., PhD. Gastroesophageal adenocarcinoma originates from the glandular epithelium of the esophagus, gastroesophageal junction and stomach. The incidence of gastroesophageal adenocarcinoma is ... Read full blog post. |
|
Tools for Isolation, Quantification and Analysis of Exosomes Exosomes are spherical to cup-shaped bilayered membrane enclosed nanosize vesicles (30-100 nm) which have the ability to shuttle active cargoes between cells. Johnstone et al. 1987 pioneered in documenting the generation of exosomes in differentiat... Read full blog post. |
|
CD19: An Undoubted Biomarker for B Cells CD19 is a cell surface protein member of the large immunoglobulin superfamily that complexes with CD21, CD81, and CD225 in the membrane of mature B-cells. A major function of CD19 is to assemble with the antigen receptor of B-lymphocytes to decrease t... Read full blog post. |
|
CD81/TAPA1: I'm on Tapa the Cell Target of the antiproliferative 1 (TAPA1), also known as CD81, is found in the plasma membrane in lymphocytes and plays an important role in the regulation of lymphoma cell growth. This transmembrane 4 superfamily (TM4SF) protein is primarily found on... Read full blog post. |
The concentration calculator allows you to quickly calculate the volume, mass or concentration of your vial. Simply enter your mass, volume, or concentration values for your reagent and the calculator will determine the rest.
![Immunohistochemistry-Paraffin: CD81 Antibody (1.3.3.22) [NBP2-53318] - Formalin-fixed, paraffin-embedded human Tonsil stained with CD81 Mouse Monoclonal Antibody (1.3.3.22).](http://images.novusbio.com/fullsize/CD81-Antibody-1-3-3-22-Immunohistochemistry-Paraffin-NBP2-53318-img0002.jpg "Immunohistochemistry-Paraffin: CD81 Antibody (1.3.3.22) [NBP2-53318] - Formalin-fixed, paraffin-embedded human Tonsil stained with CD81 Mouse Monoclonal Antibody (1.3.3.22).")
![Flow Cytometry: CD81 Antibody (1.3.3.22) [NBP2-53318] - Flow cytometry analysis of bead-bound exosomes derived from MCF-7 cells. Unstained exosomes (gray) or exosomes stained with CF568-labeled CD81 monoclonal antibody (1.3.3.22) (orange).](http://images.novusbio.com/fullsize/CD81-Antibody-1-3-3-22-Flow-Cytometry-NBP2-53318-img0007.jpg "Flow Cytometry: CD81 Antibody (1.3.3.22) [NBP2-53318] - Flow cytometry analysis of bead-bound exosomes derived from MCF-7 cells. Unstained exosomes (gray) or exosomes stained with CF568-labeled CD81 monoclonal antibody (1.3.3.22) (orange).")
![Immunohistochemistry-Paraffin: CD81 Antibody (1.3.3.22) [NBP2-53318] - Formalin-fixed, paraffin-embedded human Lymph Node stained with CD81 Mouse Monoclonal Antibody (1.3.3.22).](http://images.novusbio.com/fullsize/CD81-Antibody-1-3-3-22-Immunohistochemistry-Paraffin-NBP2-53318-img0001.jpg "Immunohistochemistry-Paraffin: CD81 Antibody (1.3.3.22) [NBP2-53318] - Formalin-fixed, paraffin-embedded human Lymph Node stained with CD81 Mouse Monoclonal Antibody (1.3.3.22).")
![Flow Cytometry: CD81 Antibody (1.3.3.22) [NBP2-53318] - Flow cytometry analysis of MCF-7 cells unstained (gray) or stained with CD81 mouse monoclonal antibody (1.3.3.22) and goat anti-mouse CF647 (red).](http://images.novusbio.com/fullsize/CD81-Antibody-1-3-3-22-Flow-Cytometry-NBP2-53318-img0006.jpg "Flow Cytometry: CD81 Antibody (1.3.3.22) [NBP2-53318] - Flow cytometry analysis of MCF-7 cells unstained (gray) or stained with CD81 mouse monoclonal antibody (1.3.3.22) and goat anti-mouse CF647 (red).")
![Bioactivity CTLA-4 [Unconjugated]](https://images.novusbio.com/images2/CTLA4_7268CT_2293.jpg)
![Western Blot Butyrylcholinesterase/BCHE Antibody [Unconjugated]](https://images.novusbio.com/images2/Butyrylcholinesterase_AF9024_Western_Blot_19121.jpg)
![Immunohistochemistry Butyrylcholinesterase/BCHE Antibody [Unconjugated]](https://images.novusbio.com/images2/Butyrylcholinesterase_AF9024_Immunohistochemistry_19158.jpg)
![Immunohistochemistry LDLR Antibody [Unconjugated]](https://images.novusbio.com/images2/LDL_R_AF2255_Immunohistochemistry_7149.jpg)
![Western Blot LDLR Antibody [Unconjugated]](https://images.novusbio.com/images2/LDLR_AF2255_Western_Blot_23731.jpg)
![Western Blot LDLR Antibody [Unconjugated]](https://images.novusbio.com/images/af2255_mouse-ldl-r-affinity-purified-polyclonal-ab-4120241049445.jpg)
![Flow Cytometry CD151 Antibody (455807) [Unconjugated]](https://images.novusbio.com/images2/CD151_MAB4609_Flow_Cytometry_8473.jpg)
![Immunocytochemistry CD151 Antibody (455807) [Unconjugated]](https://images.novusbio.com/images2/CD151_MAB4609_Immunocytochemistry__Immunofluorescence_19523.jpg)
![Flow Cytometry Integrin beta 1/CD29 Antibody (P5D2) [Unconjugated]](https://images.novusbio.com/images2/Integrin_beta_1_MAB17781_Flow_Cytometry_17077.jpg)
![Immunocytochemistry Integrin beta 1/CD29 Antibody (P5D2) [Unconjugated]](https://images.novusbio.com/images2/Integrin_beta_1_MAB17781_Immunocytochemistry__Immunofluorescence_17398.jpg)
![Flow Cytometry Integrin beta 1/CD29 Antibody (P5D2) [Unconjugated]](https://images.novusbio.com/images2/Integrin_beta_1_MAB17781_Flow_Cytometry_23861.jpg)
![Flow Cytometry: Mouse IgG1 Kappa Isotype Control (P3.6.2.8.1) [NBP1-43319] - Analysis of Alexa Fluor (R) 700 conjugate of NBP1-43319. Human buffy coat stained with mouse IgG1 Kappa isotype control. Flow cytometry image submitted by a verified customer review.](https://images.novusbio.com/images/Mouse-IgG1-Kappa-Light-Chain-Isotype-Control-P3-6-2-8-1-Flow-Cytometry-NBP1-43319-img0002.jpg "Flow Cytometry: Mouse IgG1 Kappa Isotype Control (P3.6.2.8.1) [NBP1-43319] - Analysis of Alexa Fluor (R) 700 conjugate of NBP1-43319. Human buffy coat stained with mouse IgG1 Kappa isotype control. Flow cytometry image submitted by a verified customer review.")