1XT0:
reference: The structure of RalF, an ADP-ribosylation factor guanine nucleotide exchange factor from Legionella pneumophila, reveals the presence of a cap over the active site., Amor JC, Swails J, Zhu X, Roy CR, Nagai H, Ingmundson A, Cheng X, Kahn RA, J Biol Chem 2005 Jan 14;280(2):1392-400. Epub 2004 Nov 1. PMID: 15520000

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