NCIt definition : Human Oncogene ErbB2 is a mutated variant of ERBB2 Gene, which encodes ERRB2 Receptor
Protein Tyrosine Kinase, a 185-kDa type I membrane glycoprotein similar to EGFR that
controls cell growth. Ligand binding increases ERBB2 tyrosine phosphorylation. A heterodimer
with ERBB3 and ERBB4, p185ERBB2 is an essential component of the heregulin/neuregulin
receptor. ERBB2 forms an IL6-dependent complex with IL6R gp130, resulting in ERBB2
tyrosine phosphorylation and MAPK activation. Oncogene ERBB2 disrupts normal cell
function.;