Recombinant Protein;50UG;Rabbit FCGRT&B2M Heterodimer Protein, His Tag&Tag Free (SPR verified) (FCM-R52W5) is expressed from human 293 cells (HEK293). It contains AA Ala 24 - Val 297 (FCGRT) & Val 22 - Tyr 120 (B2M) (Accession # ABY47597.1 (FCGRT) & ALR85722.1 (B2M)).;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.;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 2.12 μM as determined in SPR assay (Biacore T200) (QC tested).