1ROB:
reference: Structure of the crystalline complex of cytidylic acid (2'-CMP) with ribonuclease at 1.6 A resolution. Conservation of solvent sites in RNase-A high-resolution structures., Lisgarten JN, Gupta V, Maes D, Wyns L, Zegers I, Palmer RA, Dealwis CG, Aguilar CF, Hemmings AM, Acta Crystallogr D Biol Crystallogr 1993 Nov 1;49(Pt 6):541-7. PMID: 15299491

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