3CWH:
reference: Hydrogen location in stages of an enzyme-catalyzed reaction: time-of-flight neutron structure of D-xylose isomerase with bound D-xylulose., Kovalevsky AY, Katz AK, Carrell HL, Hanson L, Mustyakimov M, Fisher SZ, Coates L, Schoenborn BP, Bunick GJ, Glusker JP, Langan P, Biochemistry. 2008 Jul 22;47(29):7595-7. Epub 2008 Jun 26. PMID: 18578508

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