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Human CD82 / KAI-1 Protein (His Tag)

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Human CD82 Protein Product Information
Synonym:4F9, C33, GR15, IA4, KAI1, R2, SAR2, ST6, TSPAN27
Protein Construction:A DNA sequence encoding the second extracellular domain of human CD82 (P27701-1) (Gly 111-Leu 228) was fused with a polyhistidine tag at the C-terminus and a signal peptide 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.
Human CD82 Protein QC Testing
Purity:> 90 % as determined by SDS-PAGE
Endotoxin:< 1.0 EU per μg of the 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:Gly 111
Molecule Mass:The secreted recombinant human CD82 consists of 129 amino acids and has a predicted molecular mass of 15 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of the protein is approximately 25-33 kDa due to glycosylation.
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.
Human CD82 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.
Other CD82 Recombinant Protein Products
CD82/KAI-1 Background

CD82, also known as KAI-1, structurally belongs to tetraspanin family while categorised as metastasis suppressor gene on functional grounds. KAI1/CD82 is localized on cell membrane and form interactions with other tetraspanins, integrins and chemokines which are respectively responsible for cell migration, adhesion and signalling. Downregulation of CD82 expression is associated with the advanced stages of many human cancers and correlates with the acquisition of metastatic potential. Recent studies suggest that complex mechanisms underlie CD82 loss of function, including altered transcriptional regulation, splice variant production and post-translational protein modifications, and indicate a central role for CD82 in controlling metastasis as a 'molecular facilitator'. The loss of KAI1/CD82 expression in invasive and metastatic cancers is due to a complex, epigenetic mechanism that probably involves transcription factors such as NFkappaB, p53, and beta-catenin. A loss of KAI1 expression is also associated with the advanced stages of many human malignancies and results in the acquisition of invasive and metastatic capabilities by tumour cells. Thus, KAI1/CD82 is regarded as a wide-spectrum tumor metastasis suppressor.

Human CD82/KAI-1 References
  • Malik FA, et al. (2009) KAI-1/CD82, the molecule and clinical implication in cancer and cancer metastasis. Histol Histopathol. 24(4): 519-30.
  • Liu WM, et al. (2006) KAI1/CD82, a tumor metastasis suppressor. Cancer Lett. 240(2): 183-94.
  • Tonoli H, et al. (2006) CD82 metastasis suppressor gene: a potential target for new therapeutics? Trends Mol Med. 11(12): 563-70.
  • Jackson P, et al. (2005) KAI1 tetraspanin and metastasis suppressor. Int J Biochem Cell Biol. 37(3): 530-4.
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    Catalog: 12275-H08H-20
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