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This gene encodes a member of the IMD (IRSp53/MIM homology domain) family. Members of this family can be subdivided in two groups, the IRSp53-like and MIM-like, based on the presence or absence of the SH3 (Src homology 3) domain. The protein encoded by this gene contains a conserved IMD, also known as F-actin bundling domain, at the N-terminus, and a canonical SH3 domain near the C-terminus, so it belongs to the IRSp53-like group. This protein is the substrate for insulin receptor tyrosine kinase and binds to the small GTPase Rac. It is involved in signal transduction pathways that link deformation of the plasma membrane and remodeling of the actin cytoskeleton. It also promotes actin assembly and membrane protrusions when overexpressed in mammalian cells, and is essential to the formation of a potent actin assembly complex during EHEC (Enterohemorrhagic Escherichia coli) pedestal fodomain:The IMD domain is predicted to have a helical structure. It may induce actin bundling and filopodia formation.,function:May function as adapter protein (Potential). Involved in the formation of clusters of actin bundles.,PTM:Phosphorylated on tyrosine in response to insulin.,similarity:Contains 1 IMD (IRSp53/MIM homology) domain.,similarity:Contains 1 SH3 domain.,subunit:Interacts with RAC1. Binds to F-actin.,
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