Gain-of-Function SHP2 E76Q Mutant Rescuing Autoinhibition Mechanism Associated with Juvenile Myelomonocytic Leukemia
Abstract
Juvenile myelomonocytic leukemia (JMML) is an invasive myeloproliferative neoplasm and is a childhood disease with very high clinical lethality. The SHP2 is encoded by the PTPN11 gene, which is a nonreceptor (pY)-phosphatase and mutation causes JMML. The structural hierarchy of SHP2 includes protein tyrosine phosphatase domain (PTP) and Src-homology 2 domain (N-SH2 and C-SH2). Somatic mutation (E76Q) in the interface of SH2-PTP domain is the most commonly identified mutation found in up to 35% of patients with JMML. The mechanism of this mutant associated with JMML is poorly understood. Here, molecular dynamics simulation was performed on wild-type and mutant (E76Q) of SHP2 to explore the precise impact of gain-of-function on PTP's activity. Consequently, such impact rescues the SHP2 protein from autoinhibition state through losing the interface interactions of Q256/F7 and S502/Q76 or weakening interactions of Q256/R4, Q510/G60, and Q506/A72 between N-SH2 and PTP domains. The consequences of these interactions further relieve the D'E loop away from the PTP catalytic site. The following study would provide a mechanistic insight for better understanding of how individual SHP2 mutations alter the PTP's activity at the atomic level.
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SHP2 is involved in regulation of multiple signaling pathways, including RAS-MAPK, PI3K-AKT and JAK-STAT.
“As protein tyrosine phosphorylation plays an essential role in multiple intracellular processes, SHP2 is involved in the regulation of multiple signaling pathways, including those involved in cancer cells, such as RAS-MAPK, PI3K-AKT and JAK-STAT pathways.”
From Recent advances in targeting the “undruggable” proteins: from drug discovery to clinical trials (2023) · cites this paper as [263]
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- Authors
- Rehman, A. U., Rafiq, H., Rahman, M. U., Li, J., Liu, H., Luo, S., Arshad, T., Wadood, A., & Chen, H.-F.
- Affiliations
- Abdul Wali Khan University Mardan (PK)
- Shanghai Jiao Tong University (CN)
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, National Experimental Teaching Center for Life Sciences and Biotechnology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
- Venue
- Journal of Chemical Information and Modeling
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-06-20
- Volume
- 59
- Issue
- 7
- Pages
- 3229-3239
- ISSN
- 1549-9596 (ISSN-L)
- 1549-960X
- OpenAlex
- W2950456282
- Cited by
- 40
- References
- 40
- Citations by year
- 2025: 3 · 2024: 2 · 2023: 5 · 2022: 11 · 2021: 8 · 2020: 9 · 2019: 2
- FWCI
- 2.48
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Journal of Chemical Information and Modeling (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Shanghai Jiao Tong University (YG2017MS08)
- Ministry of Science and Technology of the People's Republic of China (2018YFC0310803, 2017YFE0103300)
- National Natural Science Foundation of China (31620103901, 31770771)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
- Keywords
- juvenile myelomonocytic leukemia, SHP2, PTPN11, gain-of-function mutations, autoinhibition, protein tyrosine phosphatase, molecular dynamics simulation, protein structure, catalytic site
- MeSH terms
- Gain of Function Mutation, Amino Acid Sequence, Humans, Models, Molecular, Protein Conformation, Leukemia, Myelomonocytic, Juvenile, Protein Tyrosine Phosphatase, Non-Receptor Type 11, Molecular Dynamics Simulation
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