Evidence map›Paper›PMID 36007061›Full record

ArticleScience (New York, N.Y.)2022

Craspase is a CRISPR RNA-guided, RNA-activated protease.

Chunyi Hu, Sam P B van Beljouw, Ki Hyun Nam, Gabriel Schuler, Fran Ding, Yanru Cui, Alicia Rodríguez-Molina, Anna C Haagsma, Menno Valk, Martin Pabst and 2 more

Abstract read
In one paragraph

Article in Science (New York, N.Y.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing 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

46 citing papers in PubMed.

  1. Article
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  4. Structural mechanism of SAM-AMP and SAM-AMPNature communications · 2026
    Article
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  6. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Chunyi Hu *Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.ORCID 0000-0003-4509-4840
Sam P B van Beljouw *Department of Bionanoscience, Delft University of Technology, 2629 HZ Delft, Netherlands.ORCID 0000-0003-3892-5028
Ki Hyun NamDepartment of Life Sciences, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea.ORCID 0000-0003-3268-354X
Gabriel SchulerDepartment of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.ORCID 0000-0002-7666-5733
Fran DingDepartment of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.ORCID 0000-0001-6650-1236
Yanru CuiDepartment of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.ORCID 0000-0002-2838-3491
Alicia Rodríguez-MolinaDepartment of Bionanoscience, Delft University of Technology, 2629 HZ Delft, Netherlands.ORCID 0000-0002-2368-0382
Anna C HaagsmaDepartment of Bionanoscience, Delft University of Technology, 2629 HZ Delft, Netherlands.ORCID 0000-0001-7656-3932
Menno ValkDepartment of Bionanoscience, Delft University of Technology, 2629 HZ Delft, Netherlands.ORCID 0000-0002-3672-310X
Martin PabstDepartment of Environmental Biotechnology, Delft University of Technology, 2629 HZ Delft, Netherlands.ORCID 0000-0001-9897-0723
Stan J J BrounsDepartment of Bionanoscience, Delft University of Technology, 2629 HZ Delft, Netherlands.ORCID 0000-0002-9573-1724
Ailong KeDepartment of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.ORCID 0000-0001-5957-7822

Funding

Mechanistic Investigation of RNA-Mediated Gene Regulation and ImmunityR35GM118174 · NIGMS · YALE UNIVERSITY · PI AILONG KE · 2016 to 2026
$7.9M
NIGMS NIH HHS R35 GM118174
6 · The paper itself

Abstract

The CRISPR-Cas type III-E RNA-targeting effector complex gRAMP/Cas7-11 is associated with a caspase-like protein (TPR-CHAT/Csx29) to form Craspase (CRISPR-guided caspase). Here, we use cryo-electron microscopy snapshots of Craspase to explain its target RNA cleavage and protease activation mechanisms. Target-guide pairing extending into the 5' region of the guide RNA displaces a gating loop in gRAMP, which triggers an extensive conformational relay that allosterically aligns the protease catalytic dyad and opens an amino acid side-chain-binding pocket. We further define Csx30 as the endogenous protein substrate that is site-specifically proteolyzed by RNA-activated Craspase. This protease activity is switched off by target RNA cleavage by gRAMP and is not activated by RNA targets containing a matching protospacer flanking sequence. We thus conclude that Craspase is a target RNA-activated protease with self-regulatory capacity.

Indexed as

Bacterial ProteinsCaspasesCRISPR-Associated ProteinsCRISPR-Cas SystemsPlanctomycetesRNA, Guide, CRISPR-Cas SystemsCryoelectron MicroscopyProtein ConformationBacterial ProteinsCaspasesCRISPR-Associated ProteinsRNA, Guide, CRISPR-Cas Systems

Identifiers

PMID36007061
PMCPMC10041820

What OpenQuestion holds

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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.