4B1V:
reference: Structures of the Phactr1 RPEL Domain and RPEL Motif Complexes with G-Actin Reveal the Molecular Basis for Actin Binding Cooperativity., Mouilleron S, Wiezlak M, O'Reilly N, Treisman R, McDonald NQ, Structure. 2012 Oct 2. pii: S0969-2126(12)00335-8. doi:, 10.1016/j.str.2012.08.031. PMID: 23041370

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