[1] Yonsei Univ, Coll Sci, Dept Biochem, Seoul 120749, South Korea
[2] Yonsei Univ, Coll Sci, Prot Network Res Ctr, Seoul 120749, South Korea
[3] Ewha Womans Univ, Dept Life Sci, Div Mol Life Sci, Seoul 120750, South Korea
[4] Ewha Womans Univ, Ctr Cell Signalling Res, Seoul 120750, South Korea
[5] Katholieke Univ Leuven VIB, Lab Glycobiol, Louvain, Belgium
[6] Univ London Imperial Coll Sci Technol & Med, Fac Med, Div Biomed Sci, London SW7 2AZ, England