Oxidative protein damage negatively affects protein-protein interaction: The case of KRAS-cRAF
Biochemical and Biophysical Research Communications, ISSN: 0006-291X, Vol: 734, Page: 150792
2024
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Article Description
Protein-protein interactions (PPIs) play crucial roles in cellular signaling, transmitting signals from the cell surface to its interior. One of the most important signaling cascades is the RAS-RAF-MEK-ERK pathway. This pathway is initiated by various upstream signaling reactions, including receptor tyrosine kinase (RTK) activation, and it controls many biological functions like cell proliferation, differentiation, and survival. Once RAS is activated, it binds RAF and relays the signal to downstream proteins. The RAS-binding domain (RBD) in RAF protein plays a crucial role in this process, facilitating the RAS-ERK pathway signaling. In this study, we explored the effect of oxidative stress induced by UV radiation on the KRAS-RBD interaction. Using the Split Intein-Mediated Protein Ligation (SIMPL) method, we assessed the impact of different UV doses on KRAS-RBD interactions and observed a disruption of this interaction at higher doses. UV-treated samples exhibited high levels of protein carbonylation, as detected by Oxime Blot and mass spectrometry (MS) analysis, indicating oxidative damage. The MS results provided detailed insights into specific carbonylation modifications on the KRAS protein. Our study demonstrates that protein oxidation and carbonylation can disrupt protein-protein interactions, specifically the KRAS/c-RAF interaction. These findings highlight the impact of oxidative stress on signaling pathways, such as those triggered by UV irradiation. A deeper understanding of these molecular changes may aid in developing therapies targeting diseases linked to oxidative stress, including cancer.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0006291X24013287; http://dx.doi.org/10.1016/j.bbrc.2024.150792; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85205672309&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/39378785; https://linkinghub.elsevier.com/retrieve/pii/S0006291X24013287; https://dx.doi.org/10.1016/j.bbrc.2024.150792
Elsevier BV
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