2Z8L:
reference: Crystal structures of the staphylococcal toxin SSL5 in complex with sialyl Lewis X reveal a conserved binding site that shares common features with viral and bacterial sialic acid binding proteins., Baker HM, Basu I, Chung MC, Caradoc-Davies T, Fraser JD, Baker EN, J Mol Biol. 2007 Dec 14;374(5):1298-308. Epub 2007 Oct 10. PMID: 17996251

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