Regulates actin polymerization by stimulating the actin- nucleating activity of the Arp2/3 complex. Binds to HSF1/HSTF1 and forms a complex on heat shock promoter elements (HSE) that negatively regulates HSP90 expression. Binds actin and the Arp2/3 complex. Interacts with CDC42. Binds to SH3 domains of GRB2. Interacts with the C-terminal SH3 domain of DNMBP. Interacts with SNX9. Interacts with the WW domains of PRPF40A/FBP11. Interacts with PTK2/FAK1. Interacts with NOSTRIN. Interacts with Shigella flexneri protein IcsA. The interaction with IcsA enhances the affinity of WASL for Arp2/3, thus assembling a tight complex which has maximal activity in actin assembly. Interacts with E.coli effector protein EspF(U). Identified in a complex containing at least WASL, BAIAP2L1 and E.coli EspF(U). Binds to TNK2. Note: This description may include information from UniProtKB.
Protein type: Adaptor/scaffold; Motility/polarity/chemotaxis