Evidence map›Paper›PMID 35762727›Full record

ArticleProtein science : a publication of the Protein Society2022

Structure and activity of a bacterial defense-associated 3'-5' exonuclease.

Qishan Liang, Sara T Richey, Sarah N Ur, Qiaozhen Ye, Rebecca K Lau, Kevin D Corbett

Open access · bronzeAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Bacterial and human exonucleases mediate interkingdom antiviral immunity.bioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Article
  5. Structure, function and evolution of the bacterial DinG-like proteins.Computational and structural biotechnology journal · 2025
    Review
  6. Article
  7. Review
  8. Structure and activity of a bacterial defense-associated 3'-5' exonuclease.Protein science : a publication of the Protein Society · 2022
    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

6 authors at 1 institution in 1 country.

Qishan LiangDepartment of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA.
Sara T RicheyDivision of Biological Sciences, University of California San Diego, La Jolla, California, USA.
Sarah N UrBiomedical Sciences Graduate Program, University of California San Diego, La Jolla, California, USA.
Qiaozhen YeDepartment of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA.
Rebecca K LauBiomedical Sciences Graduate Program, University of California San Diego, La Jolla, California, USA.
Kevin D CorbettDepartment of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, USA.ORCID 0000-0001-5854-2388
University of California San Diego · US

Funding

MOLECULAR BIOPHYSICS TRAINING PROGRAMT32GM008326 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KOMIVES, ELIZABETH A. · 1989 to 2020
$7.5M
Molecular mechanisms of nucleic acid recognition and maintenance in meiosis and innate immunityR35GM144121 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Kevin Daniel Corbett · 2022 to 2026
$2.7M
Training Program in Quantitative Integrative BiologyT32GM127235 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HWA, TERENCE · 2018 to 2022
$1.3M
Molecular mechanisms of the first-identified bacterial HORMA and Pch2-like proteins in a novel second-messenger signaling pathwayR21AI148814 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CORBETT, KEVIN DANIEL · 2020 to 2021
$409k
Defining the role of cyclic trinucleotide signaling in bacteriophage immunity through the activation and regulation of HORMA-associated cGAS/DncV-related nucleotidyltransferasesF31GM137600 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LAU, REBECCA KAVALER · 2020 to 2022
$95k
NIAID NIH HHS R21 AI148814NIGMS NIH HHS F31 GM137600NIGMS NIH HHS R35 GM144121NIGMS NIH HHS T32 GM008326NIGMS NIH HHS T32 GM127235
6 · The paper itself

Abstract

The widespread CBASS (cyclic oligonucleotide-based anti-phage signaling system) immune systems in bacteria protect their hosts from bacteriophage infection by triggering programmed cell death. CBASS systems all encode a cyclic oligonucleotide synthase related to eukaryotic cGAS but use diverse regulators and effector proteins including nucleases, phospholipases, and membrane-disrupting proteins to effect cell death. Cap18 is a predicted 3'-5' exonuclease associated with hundreds of CBASS systems, whose structure, biochemical activities, and biological roles remain unknown. Here we show that Cap18 is a DEDDh-family exonuclease related to the bacterial exonucleases RNase T and Orn and has nonspecific 3'-5' DNA exonuclease activity. Cap18 is commonly found in CBASS systems with associated CapW or CapH+CapP transcription factors, suggesting that it may coordinate with these proteins to regulate CBASS transcription in response to DNA damage. These data expand the repertoire of enzymatic activities associated with bacterial CBASS systems and provide new insights into the regulation of these important bacterial immune systems.

Indexed as

BacteriaExonucleasesEukaryotaMembrane ProteinsOligonucleotidesPhosphodiesterase IExonucleasesMembrane ProteinsOligonucleotidesPhosphodiesterase Ibacterial immunitybacteriophageCBASSexonucleasephage defense

Identifiers

PMID35762727
PMCPMC9214754
OpenAlexW4283391519

What OpenQuestion holds

Textmetadata
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.