NCIt definition : A protein encoded by the ERBB2 gene.;
NCIt note : The ERBB2 gene encodes two forms of ERBB2 protein. One is a transmembrane protein
that forms a heterodimer to act as the heregulin/neuregulin receptor. The other is
a secreted form that consists only of the extracellular domain. It is capable of disrupting
ERBB2 dimers thereby inhibiting growth.;