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Biotinylated Human Claudin 18.2 Protein-VLP

Product Info

Recombinant Biotinylated Full length Human Claudin 18.2 Protein-VLP is expressed from Expi293. It contains Met1-Val261.[Accession | P56856-2]

Molecular Weight

The Human Claudin 18.2 Protein has a predicted MW of 29 kDa.


Less than 1EU per μg by the LAL method.


> 95% as determined by HPLC


Supplied as 0.22μm filtered solution in PBS (pH 7.4).Notice: If you need it for immunization, Do Not use any adjuvant.


The product should be stored at -70℃. Please do not repeated freeze-thaw cycles.

Assay Data

The purity of Biotinylated Human Claudin 18.2 Protein-VLP is greater than 95% as determined by SEC-HPLC.


Immobilized Biotinylated Human Claudin 18.2 VLP on streptavidin (5μg/ml) precoated plate. Dose response curve for Anti-Claudin18.2 Antibody, hFc Tag with the EC50 of 62ng/ml determined by ELISA.

SPR Data

Amine coupling SA on CM5 Chip, SA capture Biotinylated Human Claudin 18.2 VLP, Anti-Claudin18.2 Ab. as analyte; The affinity constant of 7.74 nM as determined in SPR assay (Biacore T200).


Claudin18(CLDN18) belongs to the large claudin family of proteins, which form tight junction strands in epithelial cells.CLDN18 is specifically expressed in the stomach and lung. CLDN18 has two alternatively spliced variants,CLDN18.1 and CLDN18.2. Isoform 2 (Claudin 18.2) is abundant in gastric tumors.




(1)Singh P , Toom S , Huang Y . Anti-claudin 18.2 antibody as new targeted therapy for advanced gastric cancer[J]. Journal of Hematology & Oncology, 2017, 10(1):105.

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