1VYP:
reference: Atomic resolution structures and solution behavior of enzyme-substrate complexes of Enterobacter cloacae PB2 pentaerythritol tetranitrate reductase. Multiple conformational states and implications for the mechanism of nitroaromatic explosive degradation., Khan H, Barna T, Harris RJ, Bruce NC, Barsukov I, Munro AW, Moody PC, Scrutton NS, J Biol Chem. 2004 Jul 16;279(29):30563-72. Epub 2004 May 5. PMID: 15128738

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