scholarly journals Erlotinib binds both inactive and active conformations of the EGFR tyrosine kinase domain

2012 ◽  
Vol 448 (3) ◽  
pp. 417-423 ◽  
Author(s):  
Jin H. Park ◽  
Yingting Liu ◽  
Mark A. Lemmon ◽  
Ravi Radhakrishnan
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Tyrosine Kinase ◽  
Kinase Inhibitors ◽  
Growth Factor Receptor ◽  
Kinase Domain ◽  
Tyrosine Kinase Domain ◽  
Active Conformation ◽  
Receptor Signalling ◽  
Epidermal Growth ◽  
Egfr Mutated

Erlotinib and gefitinib, tyrosine kinase inhibitors used to block EGFR (epidermal growth factor receptor) signalling in cancer, are thought to bind only the active conformation of the EGFR-TKD (tyrosine kinase domain). Through parallel computational and crystallographic studies, we show in the present study that erlotinib also binds the inactive EGFR-TKD conformation, which may have significant implications for its use in EGFR-mutated cancers.

scholarly journals Use of Marine biotoxins to modulate the tyrosine kinase domain of the human epidermal growth factor receptor

2021 ◽  
Author(s):  
Charli Deepak Arulanandam ◽  
Ramesh Dharmara ◽  
Prathiviraj Ragothaman ◽  
Samuel Gnana Prakash Vincent
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Molecular Docking ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Tyrosine Kinase ◽  
Growth Factor Receptor ◽  
Kinase Domain ◽  
Tyrosine Kinase Domain ◽  
Marine Biotoxins ◽  
Epidermal Growth

Inappropriate activation of the Epidermal growth factor receptor (EGFR) group of kinases has been identified in a variety of tumour cells, either due to mutation or overexpression. Although the tumour is a fatal disease, significant therapy discoveries have lately been made. The human EGFR and this family of kinases have emerged as promising targets for cancer therapy. In this molecular docking study, Natural marine toxins are employed to regulate the activity of the human EGFR tyrosine kinase domain (EGFRtkd) in the molecular docking investigation (PDB ID5JEB). Marine biotoxins can cause neurological, gastrointestinal, and cardiovascular problems, as well as severe mortality and long-term morbidity in some situations. Because there is no antidote for any of the natural marine poisons, supportive care is the mainstay of treatment. Paralytic shellfish poisoning, in particular, and puffer fish poisoning, in particular, can result in death within hours of exposure to the poisons and may require immediate medical intervention. However, this research found that marine biotoxins can modulate EGFRtkd. Furthermore, homoyessotoxin was anticipated to be an EGFRtkd modulator with a binding affinity as -9.584 kcal/mol. To employ the homoyessotoxin in tumour therapies, further knowledge of natural marine biotoxins and further toxicological research is required.

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