Biotinylated Human CD64, His,Avitag (SPR & BLI verified) (Cat. No. FCA-H82E8) captured on Biotin CAP- Series S Sensor Chip can bind Herceptin with an affinity constant of 1.02 nM as determined in a SPR assay (Biacore T200) (QC tested).
Loaded Biotinylated Human CD64, His,Avitag (SPR & BLI verified) (Cat. No. FCA-H82E8) on SA Biosensor, can bind Herceptin with an affinity constant of 0.334 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Receptors that recognize the Fc portion of IgG are divided into three groups designated Fc gamma RI, RII, and RIII, also known respectively as CD64, CD32, and CD16. Fc gamma RI binds IgG with high affinity and functions during early immune responses. Fc gamma RII and RIII are low affinity receptors that recognize IgG as aggregates surrounding multivalent antigens during late immune responses.
High affinity immunoglobulin gamma Fc receptor I is also known as FCGR1A, FCG1, FCGR1, CD64 and IGFR1, is a type of integral membrane glycoprotein that binds monomeric IgG-type antibodies with high affinity, which belongs to the immunoglobulin superfamily or FCGR1 family. FCGR1A / CD64 contains 3 Ig-like C2-type (immunoglobulin-like) domains. CD64 is constitutively found on only macrophages and monocytes, but treatment of polymorphonuclear leukocytes with cytokines like IFNγ and G-CSF can induce CD64 expression on these cells.