ArticleNucleic acids research2025
Single-molecule analysis reveals that IPMK enhances the DNA-binding activity of the transcription factor SRF.
Article in Nucleic acids research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Structural insights into the development of inhibitors for inositol phosphate kinases.FEBS letters · 2026Review
- IPMK at the crossroads of cellular signaling in health and disease.FEBS letters · 2026Review
- [Association analysis between dystrophin gene polymorphism and non-syndromic cleft lip with or without cleft palate].Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2026Article
- Conservation of heat stress acclimation by the IPK2-type kinases that control the synthesis of the inositol pyrophosphate 4/6-InsP7 in land plants.PLoS genetics · 2025Article
- Causal Relationships Between Neuropathic Pain and Alzheimer's Disease: A Multi-Omics Mendelian Randomization Study with Exploratory Evidence of a Potential Protective Role of Diabetic Neuropathy.Journal of pain research · 2025Article
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Authors and funding
23 authors.
Funding
Abstract
Serum response factor (SRF) is a master transcription factor that regulates immediate early genes and cytoskeletal remodeling genes. Despite its importance, the mechanisms through which SRF stably associates with its cognate promoter remain unknown. Our biochemical and protein-induced fluorescence enhancement analyses showed that the binding of SRF to serum response element was significantly increased by inositol polyphosphate multikinase (IPMK), an SRF cofactor. Moreover, real-time tracking of SRF loci in live cell nuclei demonstrated that the chromatin residence time of SRF was reduced by IPMK depletion in fibroblasts. Conversely, elevated IPMK levels extended the SRF-chromatin association. We identified that IPMK binds to the intrinsically disordered region of SRF, which is required for the IPMK-induced stable interaction of SRF with DNA. IPMK-mediated conformational changes in SRF were observed by single-molecule fluorescence resonance energy transfer assays. Therefore, our findings demonstrate that IPMK is a critical factor for promoting high-affinity SRF-chromatin association and provide insights into the mechanisms of SRF-dependent transcription control via chaperone-like activity.
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