Evidence map›Paper›PMID 32286628›Full record

ArticleNucleic acids research2020

Machine learning predicts new anti-CRISPR proteins.

Simon Eitzinger, Amina Asif, Kyle E Watters, Anthony T Iavarone, Gavin J Knott, Jennifer A Doudna, Fayyaz Ul Amir Afsar Minhas

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 2 pooled it
5.9field-weighted citation impact, top 3% 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

64 citing papers in PubMed, 2 syntheses or guidelines pooled it, 114 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  14. NRG-P0074 Viral Sample RU1 from UnclassifiedPHAGE (New Rochelle, N.Y.) · 2025
    Article
  15. Review
  16. AcrDB update: Predicted 3D structures of anti-CRISPRs in human gut viromes.Protein science : a publication of the Protein Society · 2025
    Article
  17. Review
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  20. Article

4 more citing papers are in PubMed but not listed here.

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 3 institutions in 3 countries.

Simon EitzingerDepartment of Molecular and Cell Biology, University of California Berkeley, Berkeley, CA 94720, USA.
Amina AsifDepartment of Computer and Information Sciences, Pakistan Institute of Engineering and Applied Sciences (PIEAS), PO Nilore, Islamabad, Pakistan.
Kyle E WattersDepartment of Molecular and Cell Biology, University of California Berkeley, Berkeley, CA 94720, USA.
Anthony T IavaroneQB3/Chemistry Mass Spectrometry Facility, University of California, Berkeley, Berkeley, CA 94720, USA.
Gavin J KnottDepartment of Molecular and Cell Biology, University of California Berkeley, Berkeley, CA 94720, USA.
Jennifer A DoudnaDepartment of Molecular and Cell Biology, University of California Berkeley, Berkeley, CA 94720, USA.
Fayyaz Ul Amir Afsar MinhasDepartment of Computer and Information Sciences, Pakistan Institute of Engineering and Applied Sciences (PIEAS), PO Nilore, Islamabad, Pakistan.
University of California, Berkeley · USPakistan Institute of Engineering and Applied Sciences · PKGladstone Institutes · US

Funding

High Definition Ion Mobility SpectrometerS10OD020062 · OD · UNIVERSITY OF CALIFORNIA BERKELEY · PI WILLIAMS, EVAN R · 2015 to 2015
$590k
Howard Hughes Medical InstituteNIH HHS S10 OD020062
6 · The paper itself

Abstract

The increasing use of CRISPR-Cas9 in medicine, agriculture, and synthetic biology has accelerated the drive to discover new CRISPR-Cas inhibitors as potential mechanisms of control for gene editing applications. Many anti-CRISPRs have been found that inhibit the CRISPR-Cas adaptive immune system. However, comparing all currently known anti-CRISPRs does not reveal a shared set of properties for facile bioinformatic identification of new anti-CRISPR families. Here, we describe AcRanker, a machine learning based method to aid direct identification of new potential anti-CRISPRs using only protein sequence information. Using a training set of known anti-CRISPRs, we built a model based on XGBoost ranking. We then applied AcRanker to predict candidate anti-CRISPRs from predicted prophage regions within self-targeting bacterial genomes and discovered two previously unknown anti-CRISPRs: AcrllA20 (ML1) and AcrIIA21 (ML8). We show that AcrIIA20 strongly inhibits Streptococcus iniae Cas9 (SinCas9) and weakly inhibits Streptococcus pyogenes Cas9 (SpyCas9). We also show that AcrIIA21 inhibits SpyCas9, Streptococcus aureus Cas9 (SauCas9) and SinCas9 with low potency. The addition of AcRanker to the anti-CRISPR discovery toolkit allows researchers to directly rank potential anti-CRISPR candidate genes for increased speed in testing and validation of new anti-CRISPRs. A web server implementation for AcRanker is available online at http://acranker.pythonanywhere.com/.

Indexed as

Machine LearningBacterial ProteinsCRISPR-Associated Protein 9ProphagesProteomeSequence Analysis, ProteinStreptococcusBacterial ProteinsCRISPR-Associated Protein 9Proteome

Identifiers

PMID32286628
PMCPMC7229843
OpenAlexW3015370321

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.