Allosteric communication across STAT3 domains associated with STAT3 function and disease-causing mutation
Open accessAbstract
STAT3 is a member of STAT (signal transducer and activator of transcription) transcription activators. Aberration in STAT3 activity due to constitutive activation or mutations leads to diseases such as cancer and hyper-immunoglobulin E syndrome (HIES). STAT3 contains several structured domains including the Src homology 2 domain (SH2), linker domain (LD), DNA-binding domain (DBD) and the coiled-coil domain. Here we report the discovery of inter-domain allosteric communications in STAT3 from studies using nuclear magnetic resonance (NMR) and other methods. We found that pTyr-peptide interactions with SH2 cause structural and dynamics changes in LD and DBD. The inter-domain allosteric effect is likely mediated by the flexibility in the hydrophobic core. In addition, a mutation in LD found in HIES (I568F) induces NMR chemical shift perturbation in SH2, DBD and the coiled-coil domain, suggesting conformational changes in these domains. Consistent with conformational changes in SH2, the I568F mutant reduces SH2's binding affinity to a pTyr-containing peptide. This study provides an example of dynamics-dependent allosteric effects, and due to the structural conservation of the STAT family of proteins, the inter-domain allosteric communication observed in STAT3 likely occurs in other STATs.
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Studies investigating the impact of disease-causing mutations on STAT3 suggest that there are long-range communications between domains of STAT3, implying that STAT3 activity may be subject to allosteric modulation.
“Studies investigating the impact of disease-causing mutations on STAT3 suggest that there are long-range communications between domains of STAT3, implying that STAT3 activity may be subject to allosteric modulation (Zhang et al., 2000; Mertens et al., 2015; Namanja et al., 2016).”
From Targeting Janus Kinases and Signal Transducer and Activator of Transcription 3 To Treat Inflammation, Fibrosis, and Cancer: Rationale, Progress, and Caution (2020) · cites this paper as Namanja et al., 2016
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Cites
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Sorted by citations
Bharadwaj, U., Kasembeli, M. M., Robinson, P., & Tweardy, D. J. (2020) · Pharmacological Reviews · doi:10.1124/pr.119.018440 · Cited by 314 · see citing works
“Studies investigating the impact of disease-causing mutations on STAT3 suggest that there are long-range communications between domains of STAT3, implying that STAT3 activity may be subject to allosteric modulation (Zhang et al., 2000;Mertens et al., 2015; Namanja et al., 2016).”
Background
- Authors
- Namanja, A. T., Wang, J., Buettner, R., Colson, L., & Chen, Y.
- Affiliations
- City Of Hope National Medical Center (US)
- Corresponding author
- Chen, Yuan
- Venue
- Journal of Molecular Biology
- Publisher
- Elsevier BV
- Published
- 2016-02
- Volume
- 428
- Issue
- 3
- Pages
- 579-589
- ISSN
- 0022-2836 (ISSN-L)
- PMC
- PMC4767637
- OpenAlex
- W2238529566
- Cited by
- 31
- References
- 1
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 7 · 2023: 3 · 2022: 3 · 2021: 1 · 2020: 5 · 2019: 2 · 2018: 3 · 2017: 2 · 2016: 1
- FWCI
- 1.44
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Molecular Biology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (K01CA168958, R01GM086717, R01GM102538)
- Topics
- Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
- Keywords
- STAT3, allosteric communication, inter-domain communication, SH2 domain, linker domain, DNA-binding domain, coiled-coil domain, protein dynamics, constitutive STAT3 activation, cancer
- MeSH terms
- Allosteric Regulation, Binding Sites, Humans, Mutation, Protein Binding, Protein Structure, Tertiary, src Homology Domains, Nuclear Magnetic Resonance, Biomolecular, STAT3 Transcription Factor, Protein Multimerization
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