1R11:
reference: Structure determination of a truncated dimeric splicing endonuclease in pseudo-face-centered space group P2(1)2(1)2., Zhang Y, Li H, Acta Crystallogr D Biol Crystallogr 2004 Mar;60(Pt 3):447-52. Epub 2004, Feb 25. PMID: 14993668

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