2LSM:
reference: Structural and biochemical characterization of phage lambda FI protein (gpFI) reveals a novel mechanism of DNA packaging chaperone activity., Popovic A, Wu B, Arrowsmith CH, Edwards AM, Davidson AR, Maxwell KL, J Biol Chem. 2012 Sep 14;287(38):32085-95. doi: 10.1074/jbc.M112.378349. Epub, 2012 Jul 16. PMID: 22801427

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