Protein Phosphatase Classification: DSP/SSH※ SSH family introduction Slingshot is a family of DUSP protein phosphatase and contains three members in human genome, which are known as SSH1, SSH2 and SSH3. SSH phosphatase mainly functions as regulators of actin filament dynamics through dephosphorylating cofilin. Dephosphorylation of cofilin stimulates its activity and then cofilin binds to F-Actin, stimulates F-actin depolymerization and severing (1). In addition, SSH phosphatase and LIMK play an important role in directing cell migration (2).
Reference
1. Huang, T.Y., DerMardirossian, C. and Bokoch, G.M. (2006) Cofilin phosphatases and regulation of actin dynamics. Curr Opin Cell Biol, 18, 26-31. PMID: 16337782
2. Nishita, M., Tomizawa, C., Yamamoto, M., Horita, Y., Ohashi, K. and Mizuno, K. (2005) Spatial and temporal regulation of cofilin activity by LIM kinase and Slingshot is critical for directional cell migration. J Cell Biol, 171, 349-359. PMID: 16230460
DSP SSH in eukaryotes:
1. Huang, T.Y., DerMardirossian, C. and Bokoch, G.M. (2006) Cofilin phosphatases and regulation of actin dynamics. Curr Opin Cell Biol, 18, 26-31. PMID: 16337782
2. Nishita, M., Tomizawa, C., Yamamoto, M., Horita, Y., Ohashi, K. and Mizuno, K. (2005) Spatial and temporal regulation of cofilin activity by LIM kinase and Slingshot is critical for directional cell migration. J Cell Biol, 171, 349-359. PMID: 16230460
DSP SSH in eukaryotes: