4C20:
reference: Structural and Functional Analysis of Fucose-Processing Enzymes from Streptococcus pneumoniae., Higgins MA, Suits MD, Marsters C, Boraston AB, J Mol Biol. 2013 Dec 12. pii: S0022-2836(13)00748-1. doi:, 10.1016/j.jmb.2013.12.006. PMID: 24333485

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