[1] Univ London Imperial Coll Sci Technol & Med, Div Mol Biosci, Fac Nat Sci, London SW7 2AZ, England
[2] German Canc Res Ctr, Core Facil, D-6900 Heidelberg, Germany
[3] Univ Utrecht, Bijvoet Ctr Biomol Res, Utrecht, Netherlands
[4] Univ Giessen, Fac Med, Inst Biochem, Giessen, Germany
[5] Univ Coll Dublin, Conway Inst, Dublin Oxford Glycobiol Lab, NIBRT, Dublin 2, Ireland
[6] Univ Oxford, Oxford Glycobiol Inst, Dept Biochem, Oxford OX1 2JD, England
[7] Univ Basel, Dept Pharmaceut Sci, Basel, Switzerland
[8] European Bioinformat Inst, Hinxton, England
[9] Stockholm Univ, S-10691 Stockholm, Sweden