| 1PY3: reference: Crystal structure reveals two alternative conformations in the active site of ribonuclease Sa2., Sevcik J, Dauter Z, Wilson KS, Acta Crystallogr D Biol Crystallogr 2004 Jul;60(Pt 7):1198-204. Epub 2004, Jun 22. PMID: 15213380 |
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