5 years ago

Parallels and Distinctions in FGFR, VEGFR, and EGFR Mechanisms of Transmembrane Signaling

Parallels and Distinctions in FGFR, VEGFR, and EGFR Mechanisms of Transmembrane Signaling
Sarvenaz Sarabipour
Receptor tyrosine kinase (RTK) signal transduction is essential in human skeletal, nervous, and vascular development, in homeostasis, and in disease. RTKs are activated by dimerization in the plasma membrane. The mechanisms of receptor dimerization and activation are multifaceted and complex, and unraveling them remains challenging. Most studies of RTKs have been devoted to crystallographic analysis of their isolated extracellular domain and biochemical analysis of the catalytic domain. However, the past few years have seen direct biophysical studies of (intact) RTK dimerization in native membranes lead to significant progress in our fundamental understanding of the mechanisms of their signal transduction across the plasma membrane. This perspective focuses on recent insights into the mechanisms of fibroblast growth factor receptor and vascular endothelial growth factor receptor transmembrane signaling, derived from studies of wild-type and mutant RTKs in a number of environments, including plasma membrane-derived vesicles. These insights reveal distinct steps in and factors of RTK signaling across the plasma membrane that can guide the drug discovery process for RTK targeting therapeutics.

Publisher URL: http://dx.doi.org/10.1021/acs.biochem.7b00399

DOI: 10.1021/acs.biochem.7b00399

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