AIF-1 is an actin-binding protein that enhances membrane ruffling and RAC activation. It contains two calcium binding EF hand motifs.

1: X-ray structures of the microglia/macrophage-specific protein Iba1 from human and mouse demonstrate novel molecular conformation change induced by calcium binding. Yamada M, Ohsawa K, Imai Y, Kohsaka S, Kamitori S; J Mol Biol. 2006;364:449-457. PMID:17011575