Actin-depolymerizing protein. Severs actin filaments (F-actin) and binds to actin monomers (G-actin). Acts in a pH-independent manner. Widely expressed. Not found in skeletal muscle. In 10.5 dpc embryo somites is expressed in a superficial patch of cells (adaxial region). ISGylated. Belongs to the actin-binding proteins ADF family.