N-Glycolylneuraminic acid

N-Glycolylneuraminic acid is a nonhuman sialic acid molecule synthesized in pigs. N-Glycolylneuraminic acid is a receptor of human and animal IAVs. (In Vitro) :Expression of N-Glycolylneuraminic acid on human cells clearly suppressed infectivity of IAVs that possess N-Glycolylneuraminic acid binding ability. Furthermore, there was no difference in infectivity of a transfectant virus that included the wild-type HA gene from A/Memphis/1/1971 (H3N2), which shows no N-Glycolylneuraminic acid binding, between parent MCF7 cells and cells stably expressing the monkey CMAH gene (CMAH-MCF7 cells) . On the other hand, cell entry of the transfectant virus that included the N-Glycolylneuraminic acid-binding HA gene with a single mutation to Tyr at position Thr155 was arrested at the stage of internalization from the plasma membrane of the CMAH-MCF7 cells.