CD81 is a tetraspanin protein belonging to the transmembrane 4 superfamily (TM4SF). It possesses a large extracellular hydrophilic loop, which contains two cysteine residues capable of forming disulfide bonds, playing a crucial role in maintaining its structural stability. Furthermore, the intracellular domain of CD81 is relatively short and contains multiple potential phosphorylation sites involved in signal transduction processes. Abnormal expression or dysfunction of CD81 is associated with the occurrence and development of various diseases. For instance, in hepatitis C virus infection, CD81 serves as a key receptor for viral entry into cells, and thus changes in its expression level may affect the efficiency of viral infection and disease progression. Additionally, CD81 is also implicated in the pathogenesis of certain autoimmune diseases, tumors, and infectious diseases.
CD81 Recombinant Monoclonal Antibody
Validated Data
Positive WB detected in:K562 whole cell lysate
All lanes:CD81 antibody at 1.25μg/ml
Secondary
Goat polyclonal to rabbit IgG at 1/50000 dilution
Predicted band size: 26 KDa
Observed band size: 26 KDa
Overlay histogram showing Jurkat cells stained with CSB-RA004960A0HU (red line) at 1:50. The cells were fixed with 70% Ethylalcohol (18h) and then permeabilized with 0.3% Triton X-100 for 2 min.The cells were then incubated in 1x PBS /10% normal goat serum to block non-specific protein-protein interactions followed by primary antibody for 1 h at 4°C.The secondary antibody used was FITC goat anti-rabbit IgG (H+L) at 1/200 dilution for 1 h at 4°C. Control antibody (green line) was used under the same conditions. Acquisition of >10,000 events was performed.
IHC image of CSB-RA004960A0HU diluted at 1:100 and staining in paraffin-embedded human tonsil tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.
IHC image of CSB-RA004960A0HU diluted at 1:100 and staining in paraffin-embedded human testis tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a biotinylated secondary antibody and visualized using an HRP conjugated SP system.
The following CD81 reagents supplied by CUSABIO are manufactured under a strict quality control system. Multiple applications have been validated and solid technical support is offered.
CD81 Antibodies for Mus musculus (Mouse)
Code | Product Name | Species Reactivity | Application |
---|---|---|---|
CSB-PA004960DA01MO | Cd81 Antibody | Mouse | ELISA |
CSB-PA004960DB01MO | Cd81 Antibody, HRP conjugated | Mouse | ELISA |
CSB-PA004960DD01MO | Cd81 Antibody, Biotin conjugated | Mouse | ELISA |
CD81 Antibodies for Homo sapiens (Human)
Code | Product Name | Species Reactivity | Application |
---|---|---|---|
CSB-MA0049601A0m | CD81 Monoclonal Antibody | Human | ELISA,IHC |
CSB-PA005630 | CD81 Antibody | Human,Mouse,Rat | WB, ELISA |
CSB-RA004960A0HU | CD81 Recombinant Monoclonal Antibody | Human, Mouse, Rat | ELISA, WB, IHC, FC |
CSB-PA004960NA01HU | CD81 Antibody | Human | ELISA, IHC |
CSB-PA004960NB01HU | CD81 Antibody, HRP conjugated | Human | ELISA |
CSB-PA004960NC01HU | CD81 Antibody, FITC conjugated | Human | |
CSB-PA004960ND01HU | CD81 Antibody, Biotin conjugated | Human | ELISA |
CSB-MA004960A1m | CD81 Monoclonal Antibody | Human | ELISA, FC |
CSB-RA004960MA1HU | CD81 Recombinant Monoclonal Antibody | Human | ELISA |
CD81 Proteins for Mus musculus (Mouse)
Code | Product Name | Source |
---|---|---|
CSB-EP004960MO | Recombinant Mouse CD81 antigen (Cd81), partial | E.coli |
CSB-YP004960MO CSB-BP004960MO CSB-MP004960MO CSB-EP004960MO-B |
Recombinant Mouse CD81 antigen (Cd81), partial | Yeast Baculovirus Mammalian cell In Vivo Biotinylation in E.coli |
CD81 Proteins for Homo sapiens (Human)
Code | Product Name | Source |
---|---|---|
CSB-EP004960HU | Recombinant Human CD81 antigen (CD81), partial | E.coli |
CSB-YP004960HU | Recombinant Human CD81 antigen (CD81), partial | Yeast |
CSB-MP004960HU | Recombinant Human CD81 antigen (CD81), partial | Mammalian cell |
CSB-EP004960HUb1 | Recombinant Human CD81 antigen (CD81), partial | E.coli |
CSB-MP004960HUd7 | Recombinant Human CD81 antigen (CD81), partial (Active) | Mammalian cell |
CD81 Proteins for Bos taurus (Bovine)
Code | Product Name | Source |
---|---|---|
CSB-CF670263BO | Recombinant Bovine CD81 antigen (CD81) | in vitro E.coli expression system |
CSB-YP670263BO1 CSB-EP670263BO1 CSB-BP670263BO1 CSB-MP670263BO1 CSB-EP670263BO1-B |
Recombinant Bovine CD81 antigen (CD81), partial | Yeast E.coli Baculovirus Mammalian cell In Vivo Biotinylation in E.coli |
CD81 Proteins for Rattus norvegicus (Rat)
Code | Product Name | Source |
---|---|---|
CSB-CF726808RA | Recombinant Rat CD81 antigen (Cd81) | in vitro E.coli expression system |
CSB-YP726808RA1 CSB-EP726808RA1 CSB-BP726808RA1 CSB-MP726808RA1 CSB-EP726808RA1-B |
Recombinant Rat CD81 antigen (Cd81), partial | Yeast E.coli Baculovirus Mammalian cell In Vivo Biotinylation in E.coli |
CD81 Proteins for Saguinus oedipus (Cotton-top tamarin)
Code | Product Name | Source |
---|---|---|
CSB-CF868224SWB | Recombinant Saguinus oedipus CD81 protein (CD81) | in vitro E.coli expression system |
CSB-YP868224SWB1 CSB-EP868224SWB1 CSB-BP868224SWB1 CSB-MP868224SWB1 CSB-EP868224SWB1-B |
Recombinant Saguinus oedipus CD81 protein (CD81), partial | Yeast E.coli Baculovirus Mammalian cell In Vivo Biotinylation in E.coli |
CD81 Proteins for Pan troglodytes (Chimpanzee)
Code | Product Name | Source |
---|---|---|
CSB-CF004960EQV | Recombinant Pan troglodytes CD81 antigen (CD81) | in vitro E.coli expression system |
CSB-YP004960EQV1 CSB-EP004960EQV1 CSB-BP004960EQV1 CSB-MP004960EQV1 CSB-EP004960EQV1-B |
Recombinant Pan troglodytes CD81 antigen (CD81), partial | Yeast E.coli Baculovirus Mammalian cell In Vivo Biotinylation in E.coli |
CD81 Proteins for Chlorocebus aethiops (Green monkey) (Cercopithecus aethiops)
Code | Product Name | Source |
---|---|---|
CSB-CF004960DSU | Recombinant Chlorocebus aethiops CD81 antigen (CD81) | in vitro E.coli expression system |
CSB-YP004960DSU1 CSB-EP004960DSU1 CSB-BP004960DSU1 CSB-MP004960DSU1 CSB-EP004960DSU1-B |
Recombinant Chlorocebus aethiops CD81 antigen (CD81), partial | Yeast E.coli Baculovirus Mammalian cell In Vivo Biotinylation in E.coli |
CD81 ELISA Kit for Homo sapiens (Human)
Code | Product Name | Sample Types | Sensitivity |
---|---|---|---|
CSB-EL004960HU | Human CD81 antigen(CD81) ELISA kit | serum, plasma, tissue homogenates, cell lysates | 0.039 ng/mL |
CD81 ELISA Kit for Mus musculus (Mouse)
Code | Product Name | Sample Types | Sensitivity |
---|---|---|---|
CSB-EL004960MO | Mouse CD81 antigen(CD81) ELISA kit | serum, plasma, tissue homogenates, cell lysates | 11.75 pg/mL |