Journal
DEVELOPMENT GROWTH & DIFFERENTIATION
Volume 51, Issue 9, Pages 833-840Publisher
WILEY
DOI: 10.1111/j.1440-169X.2009.01146.x
Keywords
actin binding protein; actin depolymerizing factor homology family; Coactosin; neural crest cells; oculomotor nerve
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Funding
- Tohoku Neuroscience Global COE
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Coactosin is a 17 kDa actin binding protein that belongs to the actin depolymerizing factor/cofilin homology family. Coactosin inhibits barbed-end capping of actin filament, and is involved in actin polymerization. Coactosin is expressed in cephalic and trunk neural crest cells, cranial ganglia and dorsal root ganglia. Coactosin is also expressed in the cells that are forming mesonephric duct, and endodermal cells. Immunocytochemistry with anti-Coactosin antibody shows that Coactosin is localized in the cytoplasm, and associated with actin stress fibers in cultured neural crest cells. Coactosin is also expressed in the axon of oculomotor nerve and trigeminal nerve. In the growth cone of the oculomotor nerve axons, both Coactosin mRNA and protein were localized, which is indicative of the role of Coactosin in pathfinding of the growth cone. Coactosin is expressed in those that require dynamic and highly coordinated regulation of actin cytoskeleton, that is, neural crest cells, cells in the tip of the mesonephros, endodermal cells and axons.
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