Evidence map›Paper›PMID 33278362›Full record

ArticleMolecular cell2021

Cryo-EM Structures Reveal Transcription Initiation Steps by Yeast Mitochondrial RNA Polymerase.

Brent De Wijngaert, Shemaila Sultana, Anupam Singh, Chhaya Dharia, Hans Vanbuel, Jiayu Shen, Daniel Vasilchuk, Sergio E Martinez, Eaazhisai Kandiah, Smita S Patel and 1 more

Abstract read
In one paragraph

Article in Molecular cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed.

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  8. Biochemistry · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Brent De WijngaertRega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium.
Shemaila SultanaDepartment of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA.
Anupam SinghDepartment of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA.
Chhaya DhariaDepartment of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA.
Hans VanbuelRega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium.
Jiayu ShenDepartment of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA.
Daniel VasilchukDepartment of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA.
Sergio E MartinezRega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium.
Eaazhisai KandiahEuropean Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble, France.
Smita S PatelDepartment of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854, USA. Electronic address: patelss@rwjms.rutgers.edu.
Kalyan DasRega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium. Electronic address: kalyan.das@kuleuven.be.

Funding

Mechanistic studies of nucleic acid enzymes involved in DNA replication, transcription, and innate immunity.R35GM118086 · NIGMS · RUTGERS BIOMEDICAL AND HEALTH SCIENCES · PI SMITA S PATEL · 2016 to 2026
$8.9M
NIGMS NIH HHS R35 GM118086
6 · The paper itself

Abstract

Mitochondrial RNA polymerase (mtRNAP) is crucial in cellular energy production, yet understanding of mitochondrial DNA transcription initiation lags that of bacterial and nuclear DNA transcription. We report structures of two transcription initiation intermediate states of yeast mtRNAP that explain promoter melting, template alignment, DNA scrunching, abortive synthesis, and transition into elongation. In the partially melted initiation complex (PmIC), transcription factor MTF1 makes base-specific interactions with flipped non-template (NT) nucleotides "AAGT" at -4 to -1 positions of the DNA promoter. In the initiation complex (IC), the template in the expanded 7-mer bubble positions the RNA and NTP analog UTPαS, while NT scrunches into an NT loop. The scrunched NT loop is stabilized by the centrally positioned MTF1 C-tail. The IC and PmIC states coexist in solution, revealing a dynamic equilibrium between two functional states. Frequent scrunching/unscruching transitions and the imminent steric clashes of the inflating NT loop and growing RNA:DNA with the C-tail explain abortive synthesis and transition into elongation.

Indexed as

Binding SitesCryoelectron MicroscopyDNA-Directed RNA PolymerasesDNA, MitochondrialMitochondriaMitochondrial ProteinsModels, MolecularNucleotide MotifsPromoter Regions, GeneticProtein BindingProtein Conformation, alpha-HelicalProtein Conformation, beta-StrandProtein Interaction Domains and MotifsRNA, MitochondrialSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsDNA-Directed RNA PolymerasesDNA, MitochondrialMitochondrial ProteinsMTF1 protein, S cerevisiaeRNA, MitochondrialSaccharomyces cerevisiae ProteinsTranscription FactorsmitochondriaMTF1POLRMTRNAPRNA polymeraseRPO41TFB2Mtranscription factor

Identifiers

PMID33278362
PMCPMC7855493

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.