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  • Title: N-linked glycan structures of a mouse monoclonal antibody produced from tobacco BY2 suspension-cultured cells.
    Author: Fujiyama K, Misaki R, Katsura A, Tanaka T, Furukawa A, Omasa T, Seki T.
    Journal: J Biosci Bioeng; 2006 Mar; 101(3):212-8. PubMed ID: 16716920.
    Abstract:
    cDNA encoding H- and L-chains from a mouse monoclonal antibody was introduced into tobacco BY2 cells, and the resulting sugar chain structures of plant-produced antibodies were analyzed by a combination of HPLC, exoglucosidase digestion and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. The glycan structures determined were Man(5-6)GlcNAc2 (22.3%), GlcNAcMan5GlcNAc2 (3.1%), GlcNAcMan3FucXylGlcNAc2 (24.4%), GlcNAcMan3XylGlcNAc2 (17.8%), Man3FucXylGlcNAc2 (24.3%), and Man3XylGlcNAc2 (8.1%). The major glycan structures of the antibodies produced by transgenic suspension-cultured cells contain typical plant bisecting beta(1,2)-xylose and alpha(1,3)-fucose residues, suggesting the posttranslational modification of a recombinant antibody in the late Golgi apparatus.
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