[The ERBB2 gene encodes a putative tyrosine kinase growth factor receptor EGFR2, p185 HER2/NEU antigen, similar to the EGF receptor. The ERBB2, ERBB3, and ERBB4 genes encode heregulin/neuregulin receptors, members of the EGFR-related type I receptor tyrosine kinase subfamily. The encoded proteins form homo- and heterodimers, which complicates assignment of function: ERBB2 homodimers do not bind heregulin, but ERBB2/ERBB3 heterodimers do. Herstatin is a secreted alternative ERBB2 product, of the extracellular domain, that binds to p185ERBB2, disrupts ERBB2 dimers, reduces p185 phosphorylation, and inhibits growth. Human ERBB2 gene is located at 17p12-21. Overexpression of HER-2 correlates with poor prognosis in breast carcinoma. ( NCI )]
UMLS (NCI) C0069515 - Amino Acid, Peptide, or Protein
- Enzyme
- Receptor