Actin-binding protein that is involved in actin cytoskeleton assembly and reorganization (PubMed:22330775, PubMed:21730168). Acts as an actin nucleation factor and promotes assembly of actin filaments together with SPIRE1 and SPIRE2 (PubMed:22330775, PubMed:21730168). Involved in intracellular vesicle transport along actin fibers, providing a novel link between actin cytoskeleton dynamics and intracellular transport (By similarity). Required for asymmetric spindle positioning, asymmetric oocyte division and polar body extrusion during female germ cell meiosis (By similarity). Plays a role in responses to DNA damage, cellular stress and hypoxia by protecting CDKN1A against degradation, and thereby plays a role in stress-induced cell cycle arrest (PubMed:23375502). Also acts in the nucleus: together with SPIRE1 and SPIRE2, promotes assembly of nuclear actin filaments in response to DNA damage in order to facilitate movement of chromatin and repair factors after DNA damage (PubMed:26287480). Protects cells against apoptosis by protecting CDKN1A against degradation (PubMed:23375502). {By
SimilarityUniProtKB:Q9JL04, Experimental EvidencePubMed:21730168, Experimental EvidencePubMed:22330775, Experimental EvidencePubMed:23375502, Experimental EvidencePubMed:26287480}.
Intellectual developmental disorder, autosomal recessive 47 (MRT47) [MIM:616193]: A disorder characterized by significantly below average general intellectual functioning associated with impairments in adaptive behavior and manifested during the developmental period. MRT47 patients show delayed development, with cognition and speech more affected than motor skills. {Experimental EvidencePubMed:25480035}. Note=The disease is caused by variants affecting the gene represented in this entry.
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory