Protein tyrosine kinase that is part of several cell surface receptor complexes, but that apparently needs a coreceptor for ligand binding. Essential component of a neuregulin-receptor complex, although neuregulins do not interact with it alone. GP30 is a potential ligand for this receptor. Regulates outgrowth and stabilization of peripheral microtubules (MTs). Upon ERBB2 activation, the MEMO1-RHOA-DIAPH1 signaling pathway elicits the phosphorylation and thus the inhibition of GSK3B at cell membrane. This prevents the phosphorylation of APC and CLASP2, allowing its association with the cell membrane. In turn, membrane-bound APC allows the localization of MACF1 to the cell membrane, which is required for microtubule capture and stabilization.
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Protein Aliases: avian erythroblastosis oncogene B 2; Avian erythroblastosis viral (v-erb-B2) oncogene homologue 2 (neuro/glioblastoma derived oncogene homolog); c-erb B2/neu protein; C-erbB-2; CD antigen CD340; CD340; epidermal growth factor receptor-related protein; erb-b2; erbb 2; ErbB2 (pTyr1139); ErbB2 (pY1139); ErbB2 phospho Y1139; her 2; herstatin; human epidermal growth factor receptor 2; metas; Metastatic lymph node gene 19 protein; MLN 19; Neu oncogene; NEU proto-oncogene; neuro/glioblastoma derived oncogene homolog; neuroblastoma/glioblastoma derived oncogene homolog; p185erbB2; p185neu; phospho ErbB2; Proto-oncogene c-ErbB-2; Proto-oncogene Neu; Receptor tyrosine-protein kinase erbB-2; Tyrosine kinase-type cell surface receptor HER2; v-erb-b2 avian erythroblastic leukemia viral oncogene homolog 2; v-erb-b2 avian erythroblastic leukemia viral oncoprotein 2; v-erb-b2 erythroblastic leukemia viral oncogene homolog 2, neuro/glioblastoma derived oncogene homolog
Gene Aliases: c-erbB2; c-neu; CD340; Erbb-2; ERBB2; HER-2; HER-2/neu; HER2; Kiaa3023; mKIAA3023; MLN 19; MLN19; NEU; NGL; TKR1
Molecular Function: transmembrane signal receptor