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Your Position: Home > Membrane Protein > CD20 > CD0-H82E5

Biotinylated Human CD20 / MS4A1 Full Length Protein, His,Avitag™ (HEK293) (SPR verified)

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Based on the high binding affinity between biotin-streptavidin systems, our Streptavidin series products are recommended to use together with biotinylated proteins to get lower non-specific binding results in a shorter time.
  • Synonym
    MS4A1,CD20,MS4A-1
  • Source
    Biotinylated Human CD20 Full Length, His,Avitag(CD0-H82E5) is expressed from human 293 cells (HEK293). It contains AA Met 1 - Pro 297 (Accession # P11836-1 ).
    Predicted N-terminus: Met 1
  • Molecular Characterization
    CD20 Structure

    This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™)

    The protein has a calculated MW of 36.9 kDa. The protein migrates as 44 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Labeling
    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
  • Protein Ratio
    Passed as determined by the HABA assay / binding ELISA.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >90% as determined by SDS-PAGE.

  • Formulation

    This product is not suitable for cell based experiments due to cytotoxicity of DDM.
    DDM and CHS are INDISPENSABLE to keep membrane protein soluble and active, under no circumastance should you remove DDM and CHS.
    DDM/CHS buffer (DC-11) is sold separately and not included in protein, and please contact us if you need the buffer.
    If glycerol is not compatible to your application, remove glycerol just before immediate experiment, and NEVER store glycerol-free protein solution.

    Supplied as 0.2 μm filtered solution in 50 mM HEPES, 150 mM NaCl, DDM, CHS, pH7.5 with glycerol as protectant.

    Contact us for customized product form or formulation.

  • Shipping

    This product is supplied and shipped as sterile liquid solution with dry ice, please inquire the shipping cost.

  • Storage

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. The product MUST be stored at -70°C or lower upon receipt;
    2. -70°C for 3 months under sterile conditions.
**The DDM/CHS buffer (Cat. No. DC-11) is sold separately and not included in protein, you can follow this link for product information.
SDS-PAGE
CD20 SDS-PAGE

Biotinylated Human CD20 Full Length, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.

Bioactivity-ELISA
 CD20 ELISA

Immobilized Rituximab at 2 μg/mL (100 μL/well) can bind Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) with a linear range of 4-63 ng/mL (in presence of DDM and CHS) (QC tested).

 CD20 ELISA

Immobilized Ofatumumab at 2 μg/mL (100 μL/well) can bind Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) with a linear range of 4-63 ng/mL (in presence of DDM and CHS) (QC tested).

 CD20 ELISA

Immobilized Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) at 1 μg/mL (100 μL/well) on streptavidin (Cat. No. STN-N5116) precoated (0.5 μg/well) plate can bind Obinutuzumab with a linear range of 1.2-2 ng/mL (Routinely tested).

Bioactivity-SPR
 CD20 SPR

Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) captured on Biotin CAP-Series S Sensor Chip can bind Rituximab with an affinity constant of 1.73 nM as determined in a SPR assay (in presence of DDM and CHS) (Biacore T200) (QC tested).

 CD20 SPR

Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) captured on Biotin CAP-Series S Sensor Chip can bind Ofatumumab (Human IgG1) with an affinity constant of 1.03 nM as determined in a SPR assay (in presence of DDM and CHS) (Biacore T200) (QC tested).

 CD20 SPR

Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) captured on Biotin CAP-Series S Sensor Chip can bind Obinutuzumab with an affinity constant of 0.721 nM as determined in a SPR assay (in presence of DDM and CHS) (Biacore T200) (Routinely tested).

Bioactivity-BLI
 CD20 BLI

Loaded Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) on SA Biosensor, can bind Rituximab with an affinity constant of 0.247 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

 CD20 BLI

Loaded Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) on SA Biosensor, can bind Ofatumumab (Human IgG1) with an affinity constant of 0.277 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

 CD20 BLI

Loaded Biotinylated Human CD20 Full Length, His,Avitag (Cat. No. CD0-H82E5) on SA Biosensor, can bind Biosimilar of Obinutuzumab with an affinity constant of 0.197 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

  • Background
    This gene encodes a member of the membrane-spanning 4A gene family. Members of this nascent protein family are characterized by common structural features and similar intron/exon splice boundaries and display unique expression patterns among hematopoietic cells and nonlymphoid tissues. This gene encodes a B-lymphocyte surface molecule which plays a role in the development and differentiation of B-cells into plasma cells. This protein can be used for screening and validation of dog CD20 antibody.
  • Clinical and Translational Updates
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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