We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Structural mapping of PEAK pseudokinase interactions identifies 14-3-3 as a molecular switch for PEAK3 signaling.
- Authors
Roy, Michael J.; Surudoi, Minglyanna G.; Kropp, Ashleigh; Hou, Jianmei; Dai, Weiwen; Hardy, Joshua M.; Liang, Lung-Yu; Cotton, Thomas R.; Lechtenberg, Bernhard C.; Dite, Toby A.; Ma, Xiuquan; Daly, Roger J.; Patel, Onisha; Lucet, Isabelle S.
- Abstract
PEAK pseudokinases regulate cell migration, invasion and proliferation by recruiting key signaling proteins to the cytoskeleton. Despite lacking catalytic activity, alteration in their expression level is associated with several aggressive cancers. Here, we elucidate the molecular details of key PEAK signaling interactions with the adapter proteins CrkII and Grb2 and the scaffold protein 14-3-3. Our findings rationalize why the dimerization of PEAK proteins has a crucial function in signal transduction and provide biophysical and structural data to unravel binding specificity within the PEAK interactome. We identify a conserved high affinity 14-3-3 motif on PEAK3 and demonstrate its role as a molecular switch to regulate CrkII binding and signaling via Grb2. Together, our studies provide a detailed structural snapshot of PEAK interaction networks and further elucidate how PEAK proteins, especially PEAK3, act as dynamic scaffolds that exploit adapter proteins to control signal transduction in cell growth/motility and cancer. The PEAK family of pseudokinases are key hubs in cellular signalling, including cell motility and cancer. Here, the authors characterise how PEAK proteins interact with the adapter proteins CrkII and Grb2 and regulatory scaffold protein 14-3-3, to achieve functional signalling assemblies.
- Subjects
MOLECULAR switches; ADAPTOR proteins; SCAFFOLD proteins; CANCER cell motility; CELLULAR signal transduction; TISSUE scaffolds
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-38869-9