This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 25.4 kDa. The protein migrates as 35-45 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
>90% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
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Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
Human IL-2 R beta, His Tag (SPR verified) on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.
Human IL-2 R beta, His Tag (SPR verified) (Cat. No. CD2-H5221) captured on CM5 chip via anti-His antibody, can bind Human IL-2, Tag Free (Cat. No. IL2-H4113) with an affinity constant of 0.525 μM as determined in a SPR assay (Biacore T200) (QC tested).
Human IL-2 R beta, His Tag (SPR verified) (Cat. No. CD2-H5221) captured on CM5 chip via anti-His antibody, can bind Human IL-15, Tag Free (Cat. No. IL5-H4117) with an affinity constant of 21.7 nM as determined in a SPR assay (Biacore T200) (Routinely tested).
Loaded Human IL-2 R beta, His Tag (SPR verified) (Cat. No. CD2-H5221) on HIS1K Biosensor, can bind Human IL-2, Tag Free (Cat. No. IL2-H4113) with an affinity constant of 0.46 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Human IL-2 R beta, His Tag (SPR verified) (Cat. No. CD2-H5221) inhibits the IL-15-dependent proliferation of Mo7e cells. The EC50 for this effect is 0.38-0.45 µg/mL (Routinely tested).
Authors: Harris KE, Lorentsen KJ, Malik-Chaudhry HK, et al.
Journal: Scientific reports 2021
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