4BWL:
reference: Reaction Mechanism of N-Acetylneuraminic Acid Lyase Revealed by a Combination of Crystallography, QM/MM Simulation, and Mutagenesis., Daniels AD, Campeotto I, van der Kamp MW, Bolt AH, Trinh CH, Phillips SE, Pearson AR, Nelson A, Mulholland AJ, Berry A, ACS Chem Biol. 2014 Feb 21. PMID: 24521460

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