Rabbit FCGRT&B2M Heterodimer Protein, His Tag&Tag Free, produced by co-expression of FCGRT and B2M, has a calculated MW of 32.1 kDa (FCGRT) and 11.7 kDa (B2M). Subunit FCGRT is fused with a polyhistidine tag at the C-terminus and subunit Beta-2 microglobulin (B2M) contains no tag at the C-terminus. The reducing (R) protein migrates as 34 kDa (FCGRT) and 12 kDa (B2M) respectively due to glycosylation.
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
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:
Rabbit FCGRT&B2M Heterodimer Protein, His Tag&Tag Free on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
The purity of Rabbit FCGRT&B2M Heterodimer Protein, His Tag&Tag Free (Cat. No. FCM-R52W5) was more than 90% and the molecular weight of this protein is around 40-50 kDa verified by SEC-MALS.
Rabbit FCGRT&B2M Heterodimer Protein, His Tag&Tag Free (Cat. No. FCM-R52W5) captured on CM5 Chip via anti-His antibody can bind Herceptin® with an affinity constant of 2.28 μM as determined in SPR assay (Biacore 8K) (QC tested).
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