Immunogen sequence: SLPCILNACS GDAKSTSCIN LSVTDAGGSA QRPRPRVLLK APTLAEMEEM NTSEEEESPC GEVTLKRDRS FSEHDLAQ
Highest antigen sequence identity to the following orthologs: Mouse - 92%, Rat - 91%.
Acts as an actin nucleation factor, remains associated with the slow-growing pointed end of the new filament (PubMed:21620703). Involved in intracellular vesicle transport along actin fibers, providing a novel link between actin cytoskeleton dynamics and intracellular transport. Required for asymmetric spindle positioning and asymmetric cell division during meiosis (PubMed:21620703). Required for normal formation of the cleavage furrow and for polar body extrusion during female germ cell meiosis (PubMed:21620703). 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). [UniProt]
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Protein Aliases: Protein spire homolog 2; Spir-2; spire actin nucleation factor 2; spire family actin nucleation factor 2; spire homolog 2; spire-type actin nucleation factor 2
Gene Aliases: KIAA1832; Spir-2; SPIR2; SPIRE2
UniProt ID: (Human) Q8WWL2
Entrez Gene ID: (Human) 84501