Product Overview
Recombinant Human CD40 protein(P25942)(21-193aa), fused with C-terminal hFc tag, was expressed in HEK293.
Biological Activity
①Measured by its binding ability in a functional ELISA. Immobilized CD40 at 2 μg/ml can bind CD40L, the EC50 is 3.112-3.858 ng/ml.②Human CD40 protein hFc tag captured on COOH chip can bind Human CD40L protein hFc and Flag tag with an affinity constant of 2.06 nM as detected by LSPR Assay.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.