Evidence map›Paper›PMID 35324891›Full record

ArticlePLoS biology2022

Structural dynamics of receptor recognition and pH-induced dissociation of full-length Clostridioides difficile Toxin B.

Mengqiu Jiang, Joonyoung Shin, Rudo Simeon, Jeng-Yih Chang, Ran Meng, Yuhang Wang, Omkar Shinde, Pingwei Li, Zhilei Chen, Junjie Zhang

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.0field-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

12 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Allosterically switchable network orientsProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Article
  4. MappingmBio · 2025
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  7. Review
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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

10 authors at 2 institutions in 1 country.

Mengqiu JiangDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.
Joonyoung ShinDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.
Rudo SimeonDepartment of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, College Station, Texas, United States of America.
Jeng-Yih ChangDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.ORCID 0000-0003-3475-4508
Ran MengDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.ORCID 0000-0003-1271-3975
Yuhang WangDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.ORCID 0000-0002-8048-138X
Omkar ShindeDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.
Pingwei LiDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.
Zhilei ChenDepartment of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, College Station, Texas, United States of America.
Junjie ZhangDepartment of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, United States of America.ORCID 0000-0002-7912-0819
Texas A&M University · USTexas A&M Health Science Center · US

Funding

CryoEM Data Collection Facility Consortium at NCMIU24GM116787 · NIGMS · STANFORD UNIVERSITY · PI BULLITT, ESTHER, CHIU, WAH · 2016 to 2020
$3.1M
Molecular basis of viral DNA sensing through the cGAS-STING pathwayR01AI145287 · NIAID · TEXAS A&M AGRILIFE RESEARCH · PI Pingwei Li · 2019 to 2026
$2.5M
Oral Protein Therapeutics Against C. difficile Associated ColitisR56AI155917 · NIAID · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI CHEN, ZHILEI, SORG, JOE · 2021 to 2021
$748k
Broadly neutralizing non-antibody protein for treating clostridium difficile infectionR21AI126025 · NIAID · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI CHEN, ZHILEI · 2016 to 2017
$425k
Characterize essential regions in C. difficile toxin B for its neutralizationR21AI137696 · NIAID · TEXAS A&M AGRILIFE RESEARCH · PI ZHANG, JUNJIE · 2018 to 2019
$390k
NIAID NIH HHS R01 AI145287NIAID NIH HHS R21 AI126025NIAID NIH HHS R21 AI137696NIGMS NIH HHS U24 GM116787
6 · The paper itself

Abstract

Clostridioides difficile secretes Toxin B (TcdB) as one of its major virulence factors, which binds to intestinal epithelial and subepithelial receptors, including frizzled proteins and chondroitin sulfate proteoglycan 4 (CSPG4). Here, we present cryo-EM structures of full-length TcdB in complex with the CSPG4 domain 1 fragment (D1401-560) at cytosolic pH and the cysteine-rich domain of frizzled-2 (CRD2) at both cytosolic and acidic pHs. CSPG4 specifically binds to the autoprocessing and delivery domains of TcdB via networks of salt bridges, hydrophobic and aromatic/proline interactions, which are disrupted upon acidification eventually leading to CSPG4 drastically dissociating from TcdB. In contrast, FZD2 moderately dissociates from TcdB under acidic pH, most likely due to its partial unfolding. These results reveal structural dynamics of TcdB during its preentry step upon endosomal acidification, which provide a basis for developing therapeutics against C. difficile infections.

Indexed as

Bacterial ToxinsClostridioides difficileBacterial ProteinsProtein DomainsVirulence FactorsBacterial ProteinsBacterial ToxinsVirulence Factors

Identifiers

PMID35324891
PMCPMC8982864
OpenAlexW4220663986

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.