Catalytic activity:ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate. ,Disease:Defects in EGFR are associated with lung cancer [MIM:211980]. ,Function:Isoform 2/truncated isoform may act as an antagonist. ,Function:Receptor for EGF , but also for other members of the EGF family , as TGF-alpha , amphiregulin , betacellulin , heparin-binding EGF-like growth factor , GP30 and vaccinia virus growth factor. Is involved in the control of cell growth and differentiation. Phosphorylates MUC1 in breast cancer cells and increases the interaction of MUC1 with C-SRC and CTNNB1/beta-catenin. ,miscellaneous:Binding of EGF to the receptor leads to dimerization , internalization of the EGF-receptor complex , induction of the tyrosine kinase activity , stimulation of cell DNA synthesis , and cell proliferation. ,online information:EGFR entry ,PTM:Monoubiquitinated and polyubiquitinated upon EGF stimulation; which does not affect tyrosine kinase activity or signaling capacity but may play a role in lysosomal targeting. Polyubiquitin linkage is mainly through 'Lys-63' , but linkage through 'Lys-48' , 'Lys-11' and 'Lys-29' also occur. ,PTM:Phosphorylation of Ser-695 is partial and occurs only if Thr-693 is phosphorylated. ,similarity:Belongs to the protein kinase superfamily. Tyr protein kinase family. ,similarity:Belongs to the protein kinase superfamily. Tyr protein kinase family. EGF receptor subfamily. ,similarity:Contains 1 protein kinase domain. ,subunit:Binds RIPK1. CBL interacts with the autophosphorylated C-terminal tail of the EGF receptor. Part of a complex with ERBB2 and either PIK3C2A or PIK3C2B. The autophosphorylated form interacts with PIK3C2B , maybe indirectly. Interacts with PELP1. Binds MUC1. ,tissue specificity:Ubiquitously expressed. Isoform 2 is also expressed in ovarian cancers. ,
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