3EF2:
reference: Structural characterization of a lectin from the mushroom Marasmius oreades in complex with the blood group B trisaccharide and calcium., Grahn EM, Winter HC, Tateno H, Goldstein IJ, Krengel U, J Mol Biol. 2009 Jul 17;390(3):457-66. Epub 2009 May 6. PMID: 19426740

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