May be involved in endothelial cell morphology changes during cell spreading. In the retinal pigment epithelium, may regulate the biogenesis of melanosomes and promote their association with the apical cell surface by inducing gamma-tubulin redistribution (By similarity). Interacts with F-actin. Associates with cortical F-actin. The ASD1 domain mediates F-actin binding. Belongs to the shroom family.