FUNCTION: Regulates actin polymerization by inhibiting the actin-nucleating activity of the Arp2/3 complex; the function is competitive with nucleation promoting factors. Participates in an incoherent feedforward loop at the lamellipodium tip where it inhibits the ARP2/2 complex in response to Rac s...
FUNCTION: Regulates actin polymerization by inhibiting the actin-nucleating activity of the Arp2/3 complex; the function is competitive with nucleation promoting factors. Participates in an incoherent feedforward loop at the lamellipodium tip where it inhibits the ARP2/2 complex in response to Rac signaling and where Rac also stimulates actin polymerization through the WAVE complex. Involved in steering cell migration by controlling its directional persistence. {ECO:0000269|PubMed:24132237}.
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GO - Biological processes (BP):
directional locomotion [GO:0033058]; negative regulation of actin nucleation [GO:0051126]; negative regulation of cell migration [GO:0030336]; negative regulation of lamellipodium morphogenesis [GO:2000393]...
directional locomotion [GO:0033058]; negative regulation of actin nucleation [GO:0051126]; negative regulation of cell migration [GO:0030336]; negative regulation of lamellipodium morphogenesis [GO:2000393]
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GO - Molecular function (MF):
...
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GO - Cellular component (CC):
lamellipodium [GO:0030027]...
lamellipodium [GO:0030027]
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