1PM6:
reference: Solution structure and stability of the full-length excisionase from bacteriophage HK022., Rogov VV, Lucke C, Muresanu L, Wienk H, Kleinhaus I, Werner K, Lohr F, Pristovsek P, Ruterjans H, Eur J Biochem 2003 Dec;270(24):4846-58. PMID: 14653811

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