Evidence map›Paper›PMID 35348690›Full record

ArticleG3 (Bethesda, Md.)2022

Engineering efficient termination of bacteriophage T7 RNA polymerase transcription.

Diana G Calvopina-Chavez, Mikaela A Gardner, Joel S Griffitts

Open access · goldAbstract read
In one paragraph

Article in G3 (Bethesda, Md.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.9field-weighted citation impact, top 5% of its field
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

23 citing papers in PubMed, 36 citations in OpenAlex.

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  20. Rapid Antibacterial Activity Assessment of Chimeric Lysins.International journal of molecular sciences · 2024
    Article
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

3 authors at 1 institution in 1 country.

Diana G Calvopina-ChavezDepartment of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.ORCID 0000-0001-6314-8895
Mikaela A GardnerDepartment of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.
Joel S GriffittsDepartment of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA.ORCID 0000-0003-1177-272X
Brigham Young University · US

Funding

The structural basis of spatially constrained enzymatic promiscuityR15GM132852 · NIGMS · BRIGHAM YOUNG UNIVERSITY · PI GRIFFITTS, JOEL S · 2019 to 2019
$338k
NIGMS NIH HHS R15 GM132852
6 · The paper itself

Abstract

The bacteriophage T7 expression system is one of the most prominent transcription systems used in biotechnology and molecular-level research. However, T7 RNA polymerase is prone to read-through transcription due to its high processivity. As a consequence, enforcing efficient transcriptional termination is difficult. The termination hairpin found natively in the T7 genome is adapted to be inefficient, exhibiting 62% termination efficiency in vivo and even lower efficiency in vitro. In this study, we engineered a series of sequences that outperform the efficiency of the native terminator hairpin. By embedding a previously discovered 8-nucleotide T7 polymerase pause sequence within a synthetic hairpin sequence, we observed in vivo termination efficiency of 91%; by joining 2 short sequences into a tandem 2-hairpin structure, termination efficiency was increased to 98% in vivo and 91% in vitro. This study also tests the ability of these engineered sequences to terminate transcription of the Escherichia coli RNA polymerase. Two out of 3 of the most successful T7 polymerase terminators also facilitated termination of the bacterial polymerase with around 99% efficiency.

Indexed as

DNA-Directed RNA PolymerasesTranscription, GeneticBacteriophage T7Escherichia coliViral Proteinsbacteriophage T7 RNA polymeraseDNA-Directed RNA PolymerasesViral Proteinssynthetic terminatorsT7 polymeraseT7 terminatortranscriptional pausingtranscription termination

Identifiers

PMID35348690
PMCPMC9157156
OpenAlexW4225694262

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.