1GXU:
reference: Crystal structure and anion binding in the prokaryotic hydrogenase maturation factor HypF acylphosphatase-like domain., Rosano C, Zuccotti S, Bucciantini M, Stefani M, Ramponi G, Bolognesi M, J Mol Biol 2002 Aug 30;321(5):785-96. PMID: 12206761

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