Aliases for IRS4 Gene
External Ids for IRS4 Gene
Previous GeneCards Identifiers for IRS4 Gene
IRS4 encodes the insulin receptor substrate 4, a cytoplasmic protein that contains many potential tyrosine and serine/threonine phosphorylation sites. Tyrosine-phosphorylated IRS4 protein has been shown to associate with cytoplasmic signalling molecules that contain SH2 domains. The IRS4 protein is phosphorylated by the insulin receptor tyrosine kinase upon receptor stimulation.. [provided by RefSeq, Jul 2008]
GeneCards Summary for IRS4 Gene
IRS4 (Insulin Receptor Substrate 4) is a Protein Coding gene. Diseases associated with IRS4 include Exostosis and Lipodystrophy, Familial Partial, Type 2. Among its related pathways are ERK Signaling and Adipogenesis. Gene Ontology (GO) annotations related to this gene include obsolete signal transducer activity and insulin receptor binding. An important paralog of this gene is IRS2.
UniProtKB/Swiss-Prot for IRS4 Gene
Acts as an interface between multiple growth factor receptors possessing tyrosine kinase activity, such as insulin receptor, IGF1R and FGFR1, and a complex network of intracellular signaling molecules containing SH2 domains. Involved in the IGF1R mitogenic signaling pathway. Promotes the AKT1 signaling pathway and BAD phosphorylation during insulin stimulation without activation of RPS6KB1 or the inhibition of apoptosis. Interaction with GRB2 enhances insulin-stimulated mitogen-activated protein kinase activity. May be involved in nonreceptor tyrosine kinase signaling in myoblasts. Plays a pivotal role in the proliferation/differentiation of hepatoblastoma cell through EPHB2 activation upon IGF1 stimulation. May play a role in the signal transduction in response to insulin and to a lesser extent in response to IL4 and GH on mitogenesis. Plays a role in growth, reproduction and glucose homeostasis. May act as negative regulators of the IGF1 signaling pathway by suppressing the function of IRS1 and IRS2.