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Protein L

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Protein L Part of Bioactivity data

RPL-P814R-Cell-based assay
Evaluation of CAR expression

293 cells were transfected with anti-BCMA-scFv and RFP tag. 2e5 of the cells were first stained with Biotinylated Recombinant Protein L, His Tag, primary amine labeling, long spacer (Cat. No. RPL-P814R, 20 µg/mL), followed by FITC Streptavidin. FITC Streptavidin was used as negative control.

RPL-P81Q7-BLI
Human_FcRn_Heterodimer_Protein_Bli

Loaded Biotinylated Recombinant Protein L, His,Avitag™(Cat. No. RPL-P81Q7) on SA Biosensor, can bind Monoclonal Anti-Human CD19 Antibody, Mouse IgG2a with an affinity constant of 13.6 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

RPL-P81Q7-BLI
Human_FcRn_Heterodimer_Protein_Bli

Loaded Biotinylated Recombinant Protein L, His,Avitag™(Cat. No. RPL-P81Q7) on SA Biosensor, can bind Anti-CD19 (FMC63), scFv, His Tag with an affinity constant of 74.3 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Protein L Molecule Synonym Name

RPL,Protein L

Protein L Molecule Background

Protein L was isolated from the surface of bacterial species Peptostreptococcus magnus and was found to bind Ig(IgG,IgM,IgA,IgE and IgD) through L chain interaction, from which the name was suggested. Despite this wide-ranging binding capability with respect to Ig classes, Protein L is not a universal immunoglobilin-binding protein. Binding of Protein L to immunoglobulins is restricted to those containing kappa light chains (i.e., k chain of the VL domain). In humans and mice, kappa (k) light chains predominate. The remaining immunoglobulins have lambda (l) light chains. The recombinant protein contains four immunoglobulin (Ig) binding domains (Bdomains) of the native protein. Besides antibody, protein L is also suitable for binding of a wide range of antibody fragments such as Fabs, single-chain variable fragments (scFv), and domain antibodies (Dabs).

Protein L References

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