The beta subunit of the DINR complex binds and phosphorylates Chico. Chico has 3 phosphotyrosine binding domains on residues 411, 911 and 948 where it can be phosphorylated. The tyrosine kinase function of DINR phosphorylates Chico on these domains. Phosphorylated Chico binds to SH2 domain-containing proteins such as PI3K (Phosphoinositide 3-Kinase).
Garofalo, RS, Marin-Hincapie, M
Taylor, SI, Haft, CR, Xu, P, Poltilove, RM, Jacobs, AR
protein tyrosine kinase activity of Chico:Activated DINR:DILP complex [plasma membrane]
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