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Recombinant Human C4B protein (NP_001002029.3) is produced in Fuco-Adjusted Human Cell Lines. This expression system is used for the production of glycoproteins and antibodies with different fucosylation degree.
This gene encodes the basic form of complement factor 4, part of the classical activation pathway. The protein is expressed as a single chain precursor which is proteolytically cleaved into a trimer of alpha, beta, and gamma chains prior to secretion. The trimer provides a surface for interaction between the antigen-antibody complex and other complement components.