1EEF:
reference: Exploration of the GM1 receptor-binding site of heat-labile enterotoxin and cholera toxin by phenyl-ring-containing galactose derivatives., Fan E, Merritt EA, Zhang Z, Pickens JC, Roach C, Ahn M, Hol WG, Acta Crystallogr D Biol Crystallogr 2001 Feb;57(Pt 2):201-12. PMID: 11173465

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