CDB15:0000535 EPGN — EGFR

Experimentally validated in Human; Orthology-inferred in Mouse, Rat, Frog, Zebrafish, Chicken, Macaque, Pig, Dog, Cow, Chimp, Horse, Marmoset, Sheep

Title

Journal:; Year Published:

Abstract

EGFR Ligands Differentially Stabilize Receptor Dimers to Specify Signaling Kinetics.

Cell, 2017; PubMed, Homo sapiens EPGN — Homo sapiens EGFR
ABSTRACT: Epidermal growth factor receptor (EGFR) regulates many crucial cellular programs, with seven different activating ligands shaping cell signaling in distinct ways. Using crystallography and other approaches, we show how the EGFR ligands epiregulin (EREG) and epigen (EPGN) stabilize different dimeric conformations of the EGFR extracellular region. As a consequence, EREG or EPGN induce less stable EGFR dimers than EGF-making them partial agonists of EGFR dimerization. Unexpectedly, this weakened dimerization elicits more sustained EGFR signaling than seen with EGF, provoking responses in breast cancer cells associated with differentiation rather than proliferation. Our results reveal how responses to different EGFR ligands are defined by receptor dimerization strength and signaling dynamics. These findings have broad implications for understanding receptor tyrosine kinase (RTK) signaling specificity. Our results also suggest parallels between partial and/or biased agonism in RTKs and G-protein-coupled receptors, as well as new therapeutic opportunities for correcting RTK signaling output.
Basic Information on EPGN
Ligand Name: epithelial mitogen
Other Symbols: EPG, PRO9904, ALGV3072
Ligand Location: secreted based on hpa, perplexity, uniprot
HGNC Gene Symbol Report: EPGN
GeneCards: EPGN
HGNC Gene Group: unknown
Interactions with other Receptors for EPGN
Basic Information on EGFR
Receptor Name: epidermal growth factor receptor
Other Symbols: ERBB, ERBB1, ERRP
Receptor Location: cell membrane based on hpa, perplexity, uniprot
HGNC Gene Symbol Report: EGFR
GeneCards: EGFR
HGNC Gene Group: Receptor kinases