epidermal growth factor receptor cell proliferation signaling pathways

Epidermal Growth Factor Receptor (EGFR) is a transmembrane protein that is involved in the regulation of cell growth, survival, proliferation, and differentiation. Here’s a detailed explanation of EGFR and its role in cell proliferation signaling pathways:

EGFR Structure and Activation

1. Structure: EGFR is a receptor tyrosine kinase (RTK) that spans the cell membrane. It consists of:

   • An extracellular ligand-binding domain.
   • A single transmembrane helix.
   • An intracellular tyrosine kinase domain.
   • Several tyrosine residues in the cytoplasmic tail.