The F-actin binding domain forms a compact bundle of four antiparallel alpha-helices, which are arranged in a left-handed topology. Binding of F-actin to the F-actin binding domain may result in cytoplasmic retention and subcellular distribution of the protein, as well as possible inhibition of protein function [1].

1: Structural basis for the cytoskeletal association of Bcr-Abl/c-Abl. Hantschel O, Wiesner S, Guttler T, Mackereth CD, Rix LL, Mikes Z, Dehne J, Gorlich D, Sattler M, Superti-Furga G; Mol Cell. 2005;19:461-473. PMID:16109371