Article (Scientific journals)
Identification of an H-Ras nanocluster disrupting peptide.
STEFFEN, Candy; MANOHARAN, Ganesh Babu; PAVIC, Karolina et al.
2024In Communications Biology, 7 (1), p. 837
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Keywords :
Peptides; Proto-Oncogene Proteins p21(ras); Galectin 1; HRAS protein, human; Humans; Proto-Oncogene Proteins p21(ras)/chemistry; Galectin 1/chemistry; Galectin 1/genetics; Protein Binding; Signal Transduction; Peptides/chemistry; Medicine (miscellaneous); Biochemistry, Genetics and Molecular Biology (all)
Abstract :
[en] Hyperactive Ras signalling is found in most cancers. Ras proteins are only active in membrane nanoclusters, which are therefore potential drug targets. We previously showed that the nanocluster scaffold galectin-1 (Gal1) enhances H-Ras nanoclustering via direct interaction with the Ras binding domain (RBD) of Raf. Here, we establish that the B-Raf preference of Gal1 emerges from the divergence of the Raf RBDs at their proposed Gal1-binding interface. We then identify the L5UR peptide, which disrupts this interaction by binding with low micromolar affinity to the B- and C-Raf-RBDs. Its 23-mer core fragment is sufficient to interfere with H-Ras nanoclustering, modulate Ras-signalling and moderately reduce cell viability. These latter two phenotypic effects may also emerge from the ability of L5UR to broadly engage with several RBD- and RA-domain containing Ras interactors. The L5UR-peptide core fragment is a starting point for the development of more specific reagents against Ras-nanoclustering and -interactors.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
STEFFEN, Candy   ;  University of Luxembourg
MANOHARAN, Ganesh Babu   ;  University of Luxembourg > Faculty of Science, Technology and Medicine > Department of Life Sciences and Medicine > Team Daniel ABANKWA
PAVIC, Karolina ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Life Sciences and Medicine (DLSM)
Yeste-Vázquez, Alejandro;  Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, Amsterdam, The Netherlands ; Amsterdam Institute of Molecular and Life Sciences (AIMMS), VU University Amsterdam, Amsterdam, The Netherlands
Knuuttila, Matias ;  Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520, Turku, Finland
Arora, Neha;  Department of Integrative Biology and Pharmacology, McGovern Medical School, UT Health, Houston, TX, 77030, USA
Zhou, Yong ;  Department of Integrative Biology and Pharmacology, McGovern Medical School, UT Health, Houston, TX, 77030, USA
Härmä, Harri;  Chemistry of Drug Development, Department of Chemistry, University of Turku, 20500, Turku, Finland
GAIGNEAUX, Anthoula  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Life Sciences and Medicine (DLSM)
Grossmann, Tom N ;  Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, Amsterdam, The Netherlands ; Amsterdam Institute of Molecular and Life Sciences (AIMMS), VU University Amsterdam, Amsterdam, The Netherlands
ABANKWA, Daniel  ;  University of Luxembourg ; Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520, Turku, Finland. daniel.abankwa@uni.lu
 These authors have contributed equally to this work.
External co-authors :
yes
Language :
English
Title :
Identification of an H-Ras nanocluster disrupting peptide.
Publication date :
09 July 2024
Journal title :
Communications Biology
eISSN :
2399-3642
Publisher :
Nature Research, England
Volume :
7
Issue :
1
Pages :
837
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 18 July 2024

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