1LVY:
reference: High-pressure krypton gas and statistical heavy-atom refinement: a successful combination of tools for macromolecular structure determination., Schiltz M, Shepard W, Fourme R, Prange T, de la Fortelle E, Bricogne G, Acta Crystallogr D Biol Crystallogr. 1997 Jan 1;53(Pt 1):78-92. PMID: 15299973

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