CD81 Antibody (454720) [Unconjugated]

Images

 
Human whole blood lymphocytes were stained with Mouse Anti-Human CD81 Monoclonal Antibody (Catalog # MAB4615, filled histogram) or isotype control antibody (Catalog # MAB0041, open histogram), followed by ...read more
KIT‐captured EVs reveal distinct EV marker profiles compared to CD9‐enriched vesicles. (E) Representative immunoblot of bead‐captured KIT‐positive (second lane)&CD9(+)/KIT(‐) EVs from the flow‐through (third ...read more
KIT‐EVs are released as heterogeneous subpopulations with different physical properties. (A) Cell culture supernatant was subjected to differential ultracentrifugation to obtain P15 and P120 EV pellets, as ...read more
The protein loading of KIT‐EVs shifts among vesicle subtypes after cell treatment with SMase inhibitors. (A) Viability assessment of HMC‐1.1 cells at the end of the 16 h treatment with DMSO (vehicle control), ...read more
Mast cells produce microvesicle (P15)‐&exosome (P120)‐like KIT‐EVs. (B) KIT‐EVs purified from P15 or P120 EVs (8.9 × 109 EVs) by immunoprecipitation with an antibody against N‐terminal KIT. EVs in the ...read more
KIT‐EVs are released as heterogeneous subpopulations with different physical properties. (A) Cell culture supernatant was subjected to differential ultracentrifugation to obtain P15 and P120 EV pellets, as ...read more
KIT‐EV immunocapture of LAD2 huMC EVs and KIT‐EV recovery from spiked plasma. (A) Cytokine‐starved LAD2 huMCs were treated or not with stem cell factor (SCF; 100 ng/ml) for 2 h in HEPES‐BSA buffer. Cell ...read more
HMC‐1‐derived EVs contain KIT and canonical EV protein markers. (A, B) Detection of canonical EV marker (A) and mast cell marker proteins (B) as well as calreticulin as an exclusion marker in HMC‐1.1 and HMC‐1.2 ...read more
The protein loading of KIT‐EVs shifts among vesicle subtypes after cell treatment with SMase inhibitors. (A) Viability assessment of HMC‐1.1 cells at the end of the 16 h treatment with DMSO (vehicle control), ...read more
KIT‐captured EVs reveal distinct EV marker profiles compared to CD9‐enriched vesicles. (A) Comparison of KIT‐ vs. CD9‐captured EV populations. Each EV immunoprecipitation was performed from an equal number of ...read more
KIT‐EV immunocapture of LAD2 huMC EVs and KIT‐EV recovery from spiked plasma. (A) Cytokine‐starved LAD2 huMCs were treated or not with stem cell factor (SCF; 100 ng/ml) for 2 h in HEPES‐BSA buffer. Cell ...read more
HMC‐1‐derived EVs contain KIT and canonical EV protein markers. (A, B) Detection of canonical EV marker (A) and mast cell marker proteins (B) as well as calreticulin as an exclusion marker in HMC‐1.1 and HMC‐1.2 ...read more
HMC‐1‐derived EVs contain KIT and canonical EV protein markers. (A, B) Detection of canonical EV marker (A) and mast cell marker proteins (B) as well as calreticulin as an exclusion marker in HMC‐1.1 and HMC‐1.2 ...read more
KIT‐containing EVs can be isolated by immunocapture. (B) Representative immunoblots showing the canonical EV marker content of KIT‐EVs captured from HMC‐1.1‐derived EVs that isolated by size exclusion ...read more
The protein loading of KIT‐EVs shifts among vesicle subtypes after cell treatment with SMase inhibitors. (A) Viability assessment of HMC‐1.1 cells at the end of the 16 h treatment with DMSO (vehicle control), ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Flow, CyTOF-ready
Clone
454720
Clonality
Monoclonal
Host
Mouse
Conjugate
Unconjugated

Order Details

CD81 Antibody (454720) [Unconjugated] Summary

Immunogen
HEK293 human embryonic kidney cell line transfected with human CD81
Accession # P60033
Specificity
Detects human CD81. Stains human CD81 transfectants but not irrelevant transfectants.
Source
N/A
Isotype
IgG2b
Clonality
Monoclonal
Host
Mouse
Gene
CD81
Purity Statement
Protein A or G purified from hybridoma culture supernatant
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • CyTOF-ready
  • Flow Cytometry 2.5 ug/10^6 cells
Publications
Read Publications using
MAB4615 in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Preservative
No Preservative
Reconstitution Instructions
Reconstitute at 0.5 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for CD81 Antibody (454720) [Unconjugated]

  • CD81 antigen (target of antiproliferative 1)
  • CD81 antigen
  • CD81 molecule
  • CD81
  • CVID6
  • TAPA1
  • TAPA-1
  • Target of the antiproliferative 1
  • Tetraspanin-28
  • TSPAN28
  • Tspan-28
  • tspan-28,26 kDa cell surface protein TAPA-1
  • TSPAN28S5.7

Background

CD81, also known as TAPA-1 and TM4SF4, is a widely expressed protein in the tetraspanin family. CD81 is a multifunctional protein that interacts with a variety of other molecules, including tetraspanins, and is important for organization of the plasma membrane into microdomains. CD81 facilitates B cell and T cell activation and is an integrin-binding adhesion molecule. CD81 expression on lymphocytes is altered during infection by hepatitis C virus or HIV-1 and contributes to the pathogenicity of those viruses. Human CD81 shares 92%‑93% aa sequence identity with mouse and rat CD81.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for CD81 Antibody (MAB4615)(8)

We have publications tested in 1 confirmed species: Human.

We have publications tested in 1 application: Western Blot.


Filter By Application
Western Blot
(5)
All Applications
Filter By Species
Human
(5)
All Species
Showing Publications 1 - 8 of 8.
Publications using MAB4615 Applications Species
Pfeiffer A, Petersen JD, Falduto GH et al. Selective immunocapture reveals neoplastic human mast cells secrete distinct microvesicle- and exosome-like populations of KIT-containing extracellular vesicles Journal of extracellular vesicles 9/1/2022 [PMID: 36239715]
Kai Hu, Paul F. McKay, Karnyart Samnuan, Adrian Najer, Anna K. Blakney, Junyi Che et al. Presentation of antigen on extracellular vesicles using transmembrane domains from viral glycoproteins for enhanced immunogenicity Journal of Extracellular Vesicles 3/1/2022 [PMID: 35233930]
Q Zhang, DK Jeppesen, JN Higginboth, R Graves-Dea, VQ Trinh, MA Ramirez, Y Sohn, AC Neininger, N Taneja, ET McKinley, H Niitsu, Z Cao, R Evans, SE Glass, KC Ray, WH Fissell, S Hill, KL Rose, WJ Huh, MK Washington, GD Ayers, DT Burnette, S Sharma, LH Rome, JL Franklin, YA Lee, Q Liu, RJ Coffey Supermeres are functional extracellular nanoparticles replete with disease biomarkers and therapeutic targets Nature Cell Biology, 2021-12-09;23(12):1240-1254. 2021-12-09 [PMID: 34887515] (Western Blot, Human) Western Blot Human
R Yang, EE Lee, J Kim, JH Choi, E Kolitz, Y Chen, C Crewe, NJH Salisbury, PE Scherer, C Cockerell, TR Smith, L Rosen, L Verlinden, DA Galloway, CB Buck, MC Feltkamp, CS Sullivan, RC Wang Characterization of ALTO-encoding circular RNAs expressed by Merkel cell polyomavirus and trichodysplasia spinulosa polyomavirus PloS Pathogens, 2021-05-17;17(5):e1009582. 2021-05-17 [PMID: 33999949] (Western Blot, Human) Western Blot Human
Q Zhang, JN Higginboth, DK Jeppesen, YP Yang, W Li, ET McKinley, R Graves-Dea, J Ping, CM Britain, KA Dorsett, CL Hartman, DA Ford, RM Allen, KC Vickers, Q Liu, JL Franklin, SL Bellis, RJ Coffey Transfer of Functional Cargo in Exomeres Cell Rep, 2019-04-04;0(0):. 2019-04-04 [PMID: 30956133] (Western Blot, Human) Western Blot Human
TP Shentu, TS Huang, M Cernelc-Ko, J Chan, SS Wong, CR Espinoza, C Tan, I Gramaglia, H van der He, S Chien, JS Hagood Thy-1 dependent uptake of mesenchymal stem cell-derived extracellular vesicles blocks myofibroblastic differentiation Sci Rep, 2017-12-22;7(1):18052. 2017-12-22 [PMID: 29273797] (Western Blot, Human) Western Blot Human
M Fareh, F Almairac, L Turchi, F Burel-Vand, P Paquis, D Fontaine, S Lacas-Gerv, MP Junier, H Chneiweiss, T Virolle Cell-based therapy using miR-302-367 expressing cells represses glioblastoma growth Cell Death Dis, 2017-03-30;8(3):e2713. 2017-03-30 [PMID: 28358371] (Western Blot, Human) Western Blot Human
Xinlei Li, Hanfang Jiang, Linbing Qu, Wenxia Yao, Hua Cai, Ling Chen et al. Hepatocyte Nuclear Factor 4 alpha and Downstream Secreted Phospholipase A 2 GXIIB Regulate Production of Infectious Hepatitis C Virus Journal of Virology 1/1/2014 [PMID: 24173221]

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Secondary Antibodies

 

Isotype Controls

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Blogs on CD81.

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.

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Bioinformatics

Gene Symbol CD81
Uniprot