Recombinant Human CD82 Fc Chimera Protein, CF

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Recombinant Human CD82 Fc Chimera Protein SDS-PAGE
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Product Details

Recombinant Human CD82 Fc Chimera Protein, CF Summary

Product Specifications

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Measured by its binding ability in a functional ELISA. When Recombinant CD82/Kai‑1 Fc Chimera is used at 5 μg/mL (100 μL/well), the concentration of Biotinylated Recombinant Human TIMP-1 that produces 50% optimal binding response is 2.5-12.5 μg/mL. 
Human embryonic kidney cell, HEK293-derived human CD82/Kai-1 protein
Human IgG1
IEGR Human CD82
Accession # P27701

Accession #
N-terminal Sequence
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
40.7 kDa
53-65 kDa, reducing conditions

Product Datasheets

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Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.


Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 500 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, ≤ -20 °C under sterile conditions after reconstitution.

Scientific Data

SDS-PAGE Recombinant Human CD82 Fc Chimera Protein SDS-PAGE View Larger

2 μg/lane of Recombinant Human CD82/Kai-1 Fc Chimera was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 53-65 kDa and 105-130 kDa, respectively.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Background: CD82/Kai-1

CD82 antigen, also known as Kai-1, C33 and TSPAN27, is a widely expressed palmitoylated molecule of the tetraspanin superfamily (1, 2). The general architecture of tetraspanins contain four transmembrane domains, two extracellular loops, a small inner cytoplasmic loop, and intra-cellular N and C termini (1). One of the extracellular loops is termed the large extracellular loop (LEL) and it is responsible for interactions with binding partners such as integrins. Within the LEL, human CD82/Kai-1 shares 65% and 63%amino acid (aa) sequence identity with mouse and rat CD82/Kai-1, respectively. CD82/Kai-1 is a component of the promiscuous TIMP-1 interacting protein complex on the cell surface of human adenocarcinoma cells and gives insight into tumorigenic metastatic potential (3). CD82/Kai-1 suppresses EMT in prostate cancer cells adhered to fibronectin leading to reduced cell migration and invasiveness (4). CD82/Kai-1 function is important for muscle stem cell function in muscular disorders (5). Overexpression of CD82/Kai-1 suppresses growth, migration and invasion of oral cancer cells and may be considered as a potential therapeutic target in oral cancer (6).

  1. Mazurov, D. et al. (2006) J. Biol. Chem. 282:3896.
  2. Berditchevski, F. et al. 2001, J Cell Sci. 114:4143.
  3. Zang, J. et al. (2017) Oncotarget. 8:6496.
  4. Lee, J. et al. (2017) Oncotarget.  8:1641.
  5. Alexander, MS. et al. (2016) Cell Stem Cell. 19:800.
  6. Chai, J. et al. (2017) Mol Med. Rep. April; 15:1527.
Entrez Gene IDs
3732 (Human); 12521 (Mouse); 83628 (Rat)
Alternate Names
CD82 antigenC33; CD82 molecule; CD82; IA4; IA4C33 antigen; Inducible membrane protein R2; KAI1; KAI1GR15; kangai 1 (suppression of tumorigenicity 6, prostate; CD82 antigen (R2 leukocyteantigen, antigen detected by monoclonal and IA4)); Metastasis suppressor Kangai-1; R2; SAR2; SAR2tetraspanin-27; ST6; ST6tspan-27; Suppressor of tumorigenicity 6 protein; Tetraspanin-27; TSPAN27; Tspan-27; TSPAN274F9


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