May be a crucial component of the cytoskeleton of highly motile cells, functioning both in the invagination of large pieces of plasma membrane, as well as in forming protrusions of the plasma membrane involved in cell locomotion. In mycobacteria-infected cells, its retention on the phagosomal membrane prevents fusion between phagosomes and lysosomes. Binds actin. In non-infected macrophages, associated with the cortical microtubule network. In mycobacteria-infected macrophages, becomes progressively relocalized and retained around the mycobacterial phagosomes. Retention on the phagosomal membrane is strictly dependent on mycobacterial viability and not due to impaired acidification (By similarity). Expressed in brain, thymus, spleen, bone marrow and lymph node. Low in lung and gut. phosphorylation at Thr-412 by PKC strongly down-regulates the association with actin. Polyubiquitinated by RNF128 with 'Lys-48'-linked chains, leading to proteasomal degradation. The disease is caused by variants affecting the gene represented in this entry. Belongs to the WD repeat coronin family.