2GHY:
reference: Novel crystal form of the ColE1 Rom protein., Jang SB, Jeong MS, Carter RJ, Holbrook EL, Comolli LR, Holbrook SR, Acta Crystallogr D Biol Crystallogr. 2006 Jun;62(Pt 6):619-27. Epub 2006, May 12. PMID: 16699189

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