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c erbB 3 Protein

A Cell surface Protein-Tyrosine Kinase Receptor that is specific for Neuregulins. It has extensive homology to and can heterodimerize with the EGF Receptor (Receptor, Epidermal Growth Factor) and the erbB-2 Receptor (Receptor, erbB-2). Overexpression of the erbB-3 receptor is associated with Tumorigenesis.