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CD81 Antibody

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Orthogonal Strategies: Immunohistochemistry-Paraffin: CD81 Antibody [NBP1-80701] - Analysis in human testis and skeletal muscle tissues. Corresponding RNA-seq data are presented for the same tissues.
Immunocytochemistry/ Immunofluorescence: CD81 Antibody [NBP1-80701] - Staining of human cell line U-2 OS shows localization to plasma membrane & cytosol. Antibody staining is shown in green.
Immunohistochemistry-Paraffin: CD81 Antibody [NBP1-80701] - Staining of human skeletal muscle shows no positivity in myocytes as expected.
Immunohistochemistry-Paraffin: CD81 Antibody [NBP1-80701] - Staining of human testis shows strong membranous positivity in cells in seminiferous ducts.
Immunohistochemistry-Paraffin: CD81 Antibody [NBP1-80701] - Staining of human prostate shows moderate membranous positivity in glandular cells.
Immunohistochemistry-Paraffin: CD81 Antibody [NBP1-80701] - Staining of human prostate shows weak to moderate membranous positivity in smooth muscle cells.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications ICC/IF, IHC
Clonality
Polyclonal
Host
Rabbit
Conjugate
Unconjugated
Validated by:
       

Orthogonal Strategies

 

Order Details

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CD81 Antibody Summary

Immunogen
This antibody was developed against Recombinant Protein corresponding to amino acids: VNKDQIAKDVKQFYDQALQQAVVDDDANNAKAVVKTFHETLDCCGSSTLTALTTSVLKNNLCPSGSNIISNLFKEDCHQKIDDLFSGKLYL
Isotype
IgG
Clonality
Polyclonal
Host
Rabbit
Gene
CD81
Purity
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Immunocytochemistry/ Immunofluorescence 0.25-2 ug/ml
  • Immunohistochemistry 1:500 - 1:1000
  • Immunohistochemistry-Paraffin 1:500 - 1:1000
Application Notes
For IHC-Paraffin, HIER pH 6 retrieval is recommended. ICC/IF Fixation Permeabilization: Use PFA/Triton X-100.
Control Peptide
CD81 Protein (NBP1-80701PEP)
Publications
Read Publications using
NBP1-80701 in the following applications:

Reactivity Notes

Immunogen displays the following percentage of sequence identity for non-tested species: Mouse (81%), Rat (85%)

Packaging, Storage & Formulations

Storage
Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
Buffer
PBS (pH 7.2) and 40% Glycerol
Preservative
0.02% Sodium Azide
Purity
Immunogen affinity purified

Alternate Names for CD81 Antibody

  • 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/TAPA-1 is an integral membrane protein expressed on a variety of cell types, and has a high degree of sequence homology between human and mouse. (1) CD81 is expressed on thymic stromal cells where it plays an important role in the transition of gamma delta + T cells to more mature T cells with alpha beta T cell receptors. (2) Immunohistochemical staining has revealed that its expression is localized to the subcapsular region of the thymus and, specifically, on cells that have distinct clustering patterns. It has been speculated that the ligand for CD81 is the pre-T cell receptor, which is composed of a TCR beta chain and glycoprotein pT alpha. (2) The monoclonal antibody 2F7 can block thymocyte interaction with CD81 in vitro. (2)

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 (NBP1-80701)(2)

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Product General Protocols

Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

Video Protocols

ICC/IF Video Protocol

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Secondary Antibodies

 

Isotype Controls

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Research Areas for CD81 Antibody (NBP1-80701)

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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
Entrez
Uniprot