1RLF:
reference: Structure determination of the Ras-binding domain of the Ral-specific guanine nucleotide exchange factor Rlf., Esser D, Bauer B, Wolthuis RM, Wittinghofer A, Cool RH, Bayer P, Biochemistry 1998 Sep 29;37(39):13453-62. PMID: 9753431

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