1WMY:
reference: Characteristic recognition of N-acetylgalactosamine by an invertebrate C-type lectin, CEL-I, revealed by X-ray crystallographic analysis., Sugawara H, Kusunoki M, Kurisu G, Fujimoto T, Aoyagi H, Hatakeyama T, J Biol Chem 2004 Aug 19;. PMID: 15319425

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