Which of the Following Proteins is NOT Encoded by a Proto-Oncogene

Question

Which of the following proteins is NOT encoded by a proto-oncogene?
A) Src
B) Ras
C) EGF receptor
D) Myc
E) E-cadherin

Accepted Answer

Loss-of-function mutations in the tumor suppressor E-cadherin promote the epithelial-mesenchymal transition and local invasiveness.