Biotinylated Human CD81 Protein, His,Avitag™&Flag Tag (Detergent)

AIDD‑Ready
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CD1-H85D8-20ug
$1,240.00
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CD1-H85D8-100ug
$3,400.00
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CD1-H85D8
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  • Product Details
  • Performance Data
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  • Important Statement
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Application
  • Immunization
  • Affinity testing (SPR / BLI)
  • Screening (ELISA)
Synonyms

CVID6, S5.7, TAPA1, TSPAN28

Source

Detergent Biotinylated Human CD81 Protein, His,Avitag&Flag Tag (CD1-H85D8) is expressed from Baculovirus-Insect cells. It contains AA Gly 2 - Tyr 236 (Accession # P60033).

Predicted N-terminus: Met

Molecular Characterization

This protein carries a Flag tag at the N-terminus and a polyhistidine tag at the C-terminus followed by an Avi tag (Avitag™).

The protein has a calculated MW of 31.4 kDa. The protein migrates as 27-29 kDa under reducing (R) condition (SDS-PAGE).

*The DDM/CHS buffer (Cat. No. DC-11) is sold separately and not included in protein, you can follow the link for product information.

Structure

Each full-length transmembrane protein is encapsulated by detergent micelle.

Synthesis Process

Through mild detergent micelle extraction, dedicated solubilization, and stringent affinity purification, we maximally retain the native transmembrane conformation of full-length transmembrane proteins throughout downstream purification. This workflow yields purified, detergent-solubilized proteins free of unrelated membrane impurities and exogenous scaffold proteins, with exceptional purity, accurate quantitation, and well-preserved biological activity—ideal for immunization, binding assays in antibody discovery and screening (ELISA) and affinity testing (SPR and BLI), etc.

Labeling

Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

Protein Ratio

Passed as determined by the SABA assay / HABA assay / binding ELISA.

Purity

>60% as determined by SDS-PAGE.

Formulation

This product is not suitable for cell based experiments due to cytotoxicity of DDM.
DDM and CHS are INDISPENSABLE to keep membrane protein soluble and active, under no circumstances should you remove DDM and CHS.
DDM/CHS buffer (DC-11) is sold separately and not included in protein, and please contact us if you need the buffer.
If glycerol is not compatible with your application, remove glycerol just before the immediate experiment, and NEVER store glycerol-free protein solution.

Supplied as 0.2 μm filtered solution in 50 mM HEPES, 150 mM NaCl, DDM, CHS, pH7.5 with glycerol as protectant.

Contact us for customized product form or formulation.

Shipping and Storage

This product is supplied and shipped on dry ice.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:
  • The product MUST be stored at -70°C or lower upon receipt;
  • -70°C for 12 months under sterile conditions.

Background

CD81 is tetraspanin involved in cell adhesion, immune synapse formation, and B cell function. It is an essential host entry factor for Hepatitis C Virus (HCV) via interaction with Claudin-1 and the viral E2 glycoprotein. CD81 also serves as a defining marker for exosomes and extracellular vesicles.