Evidence map›Paper›PMID 33230133›Full record

ArticleNature communications2020

Structural basis for assembly of non-canonical small subunits into type I-C Cascade.

Roisin E O'Brien, Inês C Santos, Daniel Wrapp, Jack P K Bravo, Evan A Schwartz, Jennifer S Brodbelt, David W Taylor

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

20 citing papers in PubMed, 41 citations in OpenAlex.

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  15. Mechanistic insights into DNA binding and cleavage by a compact type I-F CRISPR-Cas system in bacteriophage.Proceedings of the National Academy of Sciences of the United States of America · 2023
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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

7 authors at 2 institutions in 1 country.

Roisin E O'BrienInstitute for Cell and Molecular Biology, University of Texas at Austin, Austin, TX, 78712, USA.
Inês C SantosDepartment of Chemistry, University of Texas at Austin, Austin, TX, 78712, USA.
Daniel WrappDepartment of Molecular Biosciences, University of Texas at Austin, Austin, TX, 78712, USA.ORCID 0000-0002-0538-9647
Jack P K BravoDepartment of Molecular Biosciences, University of Texas at Austin, Austin, TX, 78712, USA.
Evan A SchwartzInstitute for Cell and Molecular Biology, University of Texas at Austin, Austin, TX, 78712, USA.
Jennifer S BrodbeltDepartment of Chemistry, University of Texas at Austin, Austin, TX, 78712, USA.
David W TaylorInstitute for Cell and Molecular Biology, University of Texas at Austin, Austin, TX, 78712, USA. dtaylor@utexas.edu.ORCID 0000-0002-6198-1194
The University of Texas at Austin · USLivestrong Foundation · US

Funding

UVPD Mass Spectrometry of Protein ComplexesR01GM121714 · NIGMS · UNIVERSITY OF TEXAS AT AUSTIN · PI BRODBELT, JENNIFER S. · 2017 to 2020
$1.4M
NIGMS NIH HHS R01 GM121714
6 · The paper itself

Abstract

Bacteria and archaea employ CRISPR (clustered, regularly, interspaced, short palindromic repeats)-Cas (CRISPR-associated) systems as a type of adaptive immunity to target and degrade foreign nucleic acids. While a myriad of CRISPR-Cas systems have been identified to date, type I-C is one of the most commonly found subtypes in nature. Interestingly, the type I-C system employs a minimal Cascade effector complex, which encodes only three unique subunits in its operon. Here, we present a 3.1 Å resolution cryo-EM structure of the Desulfovibrio vulgaris type I-C Cascade, revealing the molecular mechanisms that underlie RNA-directed complex assembly. We demonstrate how this minimal Cascade utilizes previously overlooked, non-canonical small subunits to stabilize R-loop formation. Furthermore, we describe putative PAM and Cas3 binding sites. These findings provide the structural basis for harnessing the type I-C Cascade as a genome-engineering tool.

Indexed as

CRISPR-Cas SystemsBacterial ProteinsBinding SitesClustered Regularly Interspaced Short Palindromic RepeatsCRISPR-Associated ProteinsCryoelectron MicroscopyDesulfovibrio vulgarisDNAModels, MolecularMultiprotein ComplexesNucleotide MotifsProtein ConformationProtein SubunitsRNA, BacterialBacterial ProteinsCRISPR-Associated ProteinsDNAMultiprotein ComplexesProtein SubunitsRNA, Bacterial

Identifiers

PMID33230133
PMCPMC7684278
OpenAlexW3107484498

What OpenQuestion holds

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LicenceCC BY
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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.