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CD81 Polyclonal antibody

CD81 Polyclonal Antibody for WB, ELISA

Host / Isotype

Rabbit / IgG


Human, Mouse, Rat and More (3)





Cat no : 27855-1-AP


CD81, CD81 antigen, CD81 molecule, Cell and organelle markers, Exosome marker, S5.7, TAPA1, Tetraspanin 28, Tspan 28, TSPAN28

Tested Applications

Positive WB detected inRaji cells, mouse brain tissue, rat brain tissue, Jurkat cells

Recommended dilution

Western Blot (WB)WB : 1:1000-1:4000
Sample-dependent, check data in validation data gallery

Product Information

27855-1-AP targets CD81 in WB, IHC, ELISA applications and shows reactivity with Human, Mouse, Rat samples.

Tested Reactivity Human, Mouse, Rat
Cited Reactivityhuman, mouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen CD81 fusion protein Ag27298
Full Name CD81 molecule
Calculated molecular weight 26 kDa
Observed molecular weight23 kDa
GenBank accession numberBC002978
Gene symbol CD81
Gene ID (NCBI) 975
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

CD81 (also known as TAPA1or TSPAN28) is a membrane protein of the tetraspanin superfamily, which are characterized by the presence of four conserved transmembrane regions. Many of these members are expressed on leukocytes and have been implicated in signal transduction, cell-cell interactions, and cellular activation and development. CD81 is involved in signal transduction and cell adhesion in the immune system (PMID: 9597125). CD81 has also been identified as an essential receptor for HCV (hepatitis C virus) (PMID: 21428934).


Product Specific Protocols
WB protocol for CD81 antibody 27855-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



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