ArticleMolecular cell2025
Structural basis for promoter recognition and transcription factor binding and release in human mitochondria.
Article in Molecular cell, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Targeting POLRMT-driven epigenetic remodeling of Wnt/β-catenin to eradicate colorectal cancer stem cell proliferation.Cell death and differentiation · 2026Article
- TFAM organizes DNA into compact higher order structures.bioRxiv : the preprint server for biology · 2026Article
- POLRMT overexpression increases mtDNA transcription without affecting steady-state mRNA levels.Life science alliance · 2025Article
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4 authors.
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Abstract
Transcription in human mitochondria is driven by a core apparatus consisting of a Pol A family RNA polymerase (mtRNAP), the initiation factors TFAM and TFB2M, and the elongation factor TEFM. While earlier structures of initiation and elongation complexes provided valuable snapshots, they represent isolated stages of a highly dynamic and multistep process. Critical aspects of mitochondrial transcription-such as DNA recognition and melting, promoter escape, and the release of initiation factors-remain poorly understood. Here, we present a series of cryoelectron microscopy (cryo-EM) structures that capture the transcription complex as it transitions from the initial open promoter complex to the processive elongation complex through intermediate stages. Our data reveal new, previously unidentified determinants of promoter specificity: the sequential disengagement of mtRNAP from TFAM and the promoter, the release of TFB2M, and the recruitment of TEFM. Together, these findings provide a detailed molecular mechanism underlying transcription in human mitochondria.
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