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Rat CD81 / TAPA-1 Protein (Fc Tag)

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Rat Cd81 Protein Product Information
Protein Construction:A DNA sequence encoding the rat Cd81 (NP_037219.1) (Lys116-Lys201) was expressed with the Fc region of mouse IgG1 at the N-terminus.
Expressed Host:Human Cells
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Rat Cd81 Protein QC Testing
Purity:> (83.0+15.4)% as determined by SDS-PAGE.
Endotoxin:< 1.0 EU per μg protein as determined by the LAL method.
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Asp
Molecule Mass:The recombinant rat Cd81 consists 322 amino acids and predicts a molecular mass of 36.2 kDa.
Formulation:Lyophilized from sterile PBS, pH 7.4.
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Rat Cd81 Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Rat Cd81 Protein SDS-PAGE
Rat CD81 / TAPA-1 Protein (Fc Tag)
Other Cd81 Recombinant Protein Products
CD81 / TAPA-1 Background

CD81, also known as TAPA-1, belongs to the transmembrane 4 superfamily, also known as the tetraspanin family. Members of this family mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility.CD81 is a widely expressed cell-surface protein involved in an astonishing variety of biologic responses. It is related to adhesion, morphology, activation, proliferation, and differentiation of B, T, and other cells. On B cells CD81 is part of a complex with CD21, CD19, and Leu13. This complex reduces the threshold for B cell activation via the B cell receptor by bridging Ag specific recognition and CD21-mediated complement recognition.

Rat CD81 / TAPA-1 References
  • Petracca R. et al., 2000, J Virol. 74 (10): 4824-30.
  • Bartosch B. et al., 2003, The Journal of Biological Chemistry. 278 (43): 41624-30.
  • Clark KL. et al., 2001, Journal of Immunology. 167 (9): 5115-21.
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    Catalog: 80331-R04H-20
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