Gene
Synonyms
ERBB ERBB1 HER1
Protein Name
Epidermal growth factor receptor
UniProt ID
Ensembl Gene ID
NCBI Gene ID
Molecular Weight
134277
Protein Length
1210
Protein Domain
3D Structure
(PDB ID : 4hjo)
Target by Small Molecules
Protein-protein Interaction Database
Gene Expression
Drugs and Diseases
Enzyme Class
Catalytic Site
Catalytic Activity
ATP + L-tyrosyl-[protein] = ADP + H(+) + O-phospho-L-tyrosyl-[protein]
Localization
Cell membrane,Endoplasmic reticulum membrane,Golgi apparatus membrane,Nucleus membrane,Endosome,Endosome membrane,Nucleus;Isoform 2: Secreted;
Function
Receptor tyrosine kinase binding ligands of the EGF family and activating several signaling cascades to convert extracellular cues into appropriate cellular responses (PubMed:2790960, PubMed:10805725, PubMed:27153536). Known ligands include EGF, TGFA/TGF-alpha, AREG, epigen/EPGN, BTC/betacellulin, epiregulin/EREG and HBEGF/heparin-binding EGF (PubMed:2790960, PubMed:7679104, PubMed:8144591, PubMed:9419975, PubMed:15611079, PubMed:12297049, PubMed:27153536, PubMed:20837704). Ligand binding triggers receptor homo- and/or heterodimerization and autophosphorylation on key cytoplasmic residues. The phosphorylated receptor recruits adapter proteins like GRB2 which in turn activates complex downstream signaling cascades. Activates at least 4 major downstream signaling cascades including the RAS-RAF-MEK-ERK, PI3 kinase-AKT, PLCgamma-PKC and STATs modules (PubMed:27153536). May also activate the NF-kappa-B signaling cascade (PubMed:11116146). Also directly phosphorylates other proteins like RGS16, activating its GTPase activity and probably coupling the EGF receptor signaling to the G protein-coupled receptor signaling (PubMed:11602604). Also phosphorylates MUC1 and increases its interaction with SRC and CTNNB1/beta-catenin (PubMed:11483589). Plays a role in enhancing learning and memory performance (By similarity).Isoform 2 may act as an antagonist of EGF action.(Microbial infection) Acts as a receptor for hepatitis C virus (HCV) in hepatocytes and facilitates its cell entry. Mediates HCV entry by promoting the formation of the CD81-CLDN1 receptor complexes that are essential for HCV entry and by enhancing membrane fusion of cells expressing HCV envelope glycoproteins.
Gene Ontology
GO:0016324; GO:0009925; GO:0016323; GO:0009986; GO:0030665; GO:0005737; GO:0031901; GO:0030139; GO:0005789; GO:0005768; GO:0010008; GO:0005615; GO:0005925; GO:0000139; GO:0005887; GO:0016020; GO:0045121; GO:0097489; GO:0031965; GO:0005634; GO:0048471; GO:0005886; GO:0032991; GO:0043235; GO:0070435; GO:0045202; GO:0051015; GO:0005524; GO:0045296; GO:0005516; GO:0003682; GO:0003690; GO:0019899; GO:0048408; GO:0005006; GO:0042802; GO:0005178; GO:0004709; GO:0046934; GO:0046982; GO:0019901; GO:0019903; GO:0004713; GO:0005088; GO:0004714; GO:0004888; GO:0031625; GO:0001618; GO:0043006; GO:0007202; GO:0048143; GO:0030154; GO:0008283; GO:0007166; GO:0098609; GO:0071230; GO:0071276; GO:0071549; GO:0071364; GO:0071392; GO:0071260; GO:0034614; GO:0021795; GO:0007623; GO:0048546; GO:0016101; GO:0001892; GO:0007173; GO:0038128; GO:0061029; GO:0001942; GO:0042743; GO:0007611; GO:0097421; GO:0030324; GO:0010960; GO:0000165; GO:0061024; GO:0007494; GO:0060571; GO:0043066; GO:1905208; GO:0042059; GO:1901185; GO:0045930; GO:0045746; GO:0042177; GO:0048812; GO:0001503; GO:0042698; GO:0038083; GO:0018108; GO:0097755; GO:0045780; GO:0090263; GO:0030307; GO:0030335; GO:0008284; GO:0045737; GO:0045739; GO:0045740; GO:0050679; GO:0070374; GO:0048146; GO:1900087; GO:0050729; GO:0043406; GO:1901224; GO:0010750; GO:0033138; GO:0042327; GO:1903800; GO:1902722; GO:0051897; GO:1900020; GO:1903078; GO:0001934; GO:0048661; GO:0032930; GO:0051968; GO:0045944; GO:0045893; GO:0045907; GO:0046777; GO:0051205; GO:2000145; GO:0070372; GO:0046328; GO:0050999; GO:0050730; GO:0014066; GO:0006357; GO:0051592; GO:0033590; GO:0033594; GO:0006970; GO:0070141; GO:0007435; GO:0007165; GO:0043586; GO:0006412; GO:0007169; GO:0042060