Mouilleron S, Wiezlak M, O'Reilly N, Treisman R, McDonald NQ. Structures of the Phactr1 RPEL domain and RPEL motif complexes with G-actin reveal the molecular basis for actin binding cooperativity. Structure. 2012 Nov 07;20(11):1960–70. doi: 10.1016/j.str.2012.08.031. PMID: 23041370.