5FRE:
reference: Characterization of a high-affinity sialic acid-specific CBM40 from Clostridium perfringens and engineering of a divalent form., Ribeiro JP, Pau W, Pifferi C, Renaudet O, Varrot A, Mahal LK, Imberty A, Biochem J. 2016 Jul 15;473(14):2109-18. doi: 10.1042/BCJ20160340. Epub 2016 May, 17. PMID: 27208171

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