Evidence map›Paper›PMID 26990992›Full record

ArticleMolecular cell2016

Structural Plasticity of PAM Recognition by Engineered Variants of the RNA-Guided Endonuclease Cas9.

Carolin Anders, Katja Bargsten, Martin Jinek

Abstract read
In one paragraph

Article in Molecular cell, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed, 1 pooled it
–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

103 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. CRISPR-based functional genomics tools in vertebrate models.Experimental & molecular medicine · 2025
    Review
  10. Article
  11. Article
  12. TOP-SECRETS enables Cas9 nucleases to discriminate SNVs outside of PAMs.bioRxiv : the preprint server for biology · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Harnessing the evolving CRISPR/Cas9 for precision oncology.Journal of translational medicine · 2024
    Review
  18. Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Carolin AndersDepartment of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
Katja BargstenDepartment of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
Martin JinekDepartment of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland. Electronic address: jinek@bioc.uzh.ch.

Funding

European Research Council 337284
6 · The paper itself

Abstract

The RNA-guided endonuclease Cas9 from Streptococcus pyogenes (SpCas9) forms the core of a powerful genome editing technology. DNA cleavage by SpCas9 is dependent on the presence of a 5'-NGG-3' protospacer adjacent motif (PAM) in the target DNA, restricting the choice of targetable sequences. To address this limitation, artificial SpCas9 variants with altered PAM specificities have recently been developed. Here we report crystal structures of the VQR, EQR, and VRER SpCas9 variants bound to target DNAs containing their preferred PAM sequences. The structures reveal that the non-canonical PAMs are recognized by an induced fit mechanism. Besides mediating sequence-specific base recognition, the amino acid substitutions introduced in the SpCas9 variants facilitate conformational remodeling of the PAM region of the bound DNA. Guided by the structural data, we engineered a SpCas9 variant that specifically recognizes NAAG PAMs. Taken together, these studies inform further development of Cas9-based genome editing tools.

Indexed as

CRISPR-Cas SystemsAmino Acid SubstitutionBacterial ProteinsCRISPR-Associated Protein 9Crystallography, X-RayDNADNA, IntergenicEndonucleasesGenetic EngineeringMutationNucleic Acid ConformationNucleotide MotifsRNA, Guide, CRISPR-Cas SystemsSubstrate SpecificityBacterial ProteinsCas9 endonuclease Streptococcus pyogenesCRISPR-Associated Protein 9DNADNA, IntergenicEndonucleasesRNA, Guide, CRISPR-Cas Systems

Identifiers

PMID26990992
PMCPMC5065715

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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.