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  • Title: The sugar chains of cold-insoluble globulin. A protein related to fibronectin.
    Author: Takasaki S, Yamashita K, Suzuki K, Iwanaga S, Kobata A.
    Journal: J Biol Chem; 1979 Sep 10; 254(17):8548-53. PubMed ID: 468841.
    Abstract:
    Cold-insoluble globulin isolated from bovine plasma contains six asparagine-linked sugar chains in 1 molecule (a dimeric form). These sugar chains were released from the polypeptide backbone by hydrazinolysis and labeled by reduction with NaB[3H]4. Most of these sugar chains contain N-acetylneuraminic acid and can be separated by paper electrophoresis. By combination of sequential exoglycosidase digestion and methylation study, their structures were elucidated as Gal beta 1 leads to 4GlcNAc beta 1 leads to 2Man alpha 1 leads to 6(NeuAc alpha 2 leads to 6Gal beta 1 leads to 4GlcNAc beta 1 leads to 2Man alpha 1 leads to 3)Man beta 1 leads to 4GlcNAc beta 1 leads to 4GlcNAc, NeuAc alpha 2 leads to 6 or 4Gal beta 1 leads to 4GlcNAc beta 1 leads to 2Man alpha 1 leads to 6(NeuAc alpha 2 leads to 4 or 6Gal beta 1 leads to 4GlcNAc beta 1 leads to 2Man alpha 1 leads to 3)Man beta 1 leads to 4GlcNAc beta 1 leads to 4GlcNAc, NeuAc alpha 2 leads to 6Gal beta 1 leads to 4GlcNAc beta 1 leads to 2Man alpha 1 leads to 6[NeuAc alpha 2 4Gal beta 1 leads to 3(NeuAc alpha 2 leads to 6)GlcNAc beta 1 leads to 2Man alpha 1 leads to 3]-Man beta 1 leads to 4GlcNAc beta 1 leads to 4GlcNAc and NeuAc alpha 2 leads to 4Gal beta 1 leads to 3(NeuAc alpha 2 leads to 6)GlcNAc beta 1 leads to 2Man alpha 1 leads to 6[NeuAc alpha 2 leads to 4Gal beta 1 leads to 3(NeuAc alpha 2 leads to 6)GlcNAc beta 1 leads to 2Man alpha 1 leads to 3]man beta 1 leads to 4GlcNAc beta 1 leads to 4GlcNAc.
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