Evidence map›Paper›PMID 22479408›Full record

ArticlePloS one2012

Carbohydrate recognition by an architecturally complex α-N-acetylglucosaminidase from Clostridium perfringens.

Elizabeth Ficko-Blean, Christopher P Stuart, Michael D Suits, Melissa Cid, Matthew Tessier, Robert J Woods, Alisdair B Boraston

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

27 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Mucinase fromFrontiers in microbiology · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Effects of challenge withFrontiers in microbiology · 2022
    Article
  13. Architecturally complexProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  14. Frontiers in microbiology · 2021
    Article
  15. Coccidia-Microbiota Interactions and Their Effects on the Host.Frontiers in cellular and infection microbiology · 2021
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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 2 institutions in 3 countries.

Elizabeth Ficko-BleanBiochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada.
Christopher P Stuart
Michael D Suits
Melissa Cid
Matthew Tessier
Robert J Woods
Alisdair B Boraston
University of Victoria · CAUniversity of Georgia · US

Funding

Canadian Institutes of Health Research FRN 68913
6 · The paper itself

Abstract

CpGH89 is a large multimodular enzyme produced by the human and animal pathogen Clostridium perfringens. The catalytic activity of this exo-α-D-N-acetylglucosaminidase is directed towards a rare carbohydrate motif, N-acetyl-β-D-glucosamine-α-1,4-D-galactose, which is displayed on the class III mucins deep within the gastric mucosa. In addition to the family 89 glycoside hydrolase catalytic module this enzyme has six modules that share sequence similarity to the family 32 carbohydrate-binding modules (CBM32s), suggesting the enzyme has considerable capacity to adhere to carbohydrates. Here we suggest that two of the modules, CBM32-1 and CBM32-6, are not functional as carbohydrate-binding modules (CBMs) and demonstrate that three of the CBMs, CBM32-3, CBM32-4, and CBM32-5, are indeed capable of binding carbohydrates. CBM32-3 and CBM32-4 have a novel binding specificity for N-acetyl-β-D-glucosamine-α-1,4-D-galactose, which thus complements the specificity of the catalytic module. The X-ray crystal structure of CBM32-4 in complex with this disaccharide reveals a mode of recognition that is based primarily on accommodation of the unique bent shape of this sugar. In contrast, as revealed by a series of X-ray crystal structures and quantitative binding studies, CBM32-5 displays the structural and functional features of galactose binding that is commonly associated with CBM family 32. The functional CBM32s that CpGH89 contains suggest the possibility for multivalent binding events and the partitioning of this enzyme to highly specific regions within the gastrointestinal tract.

Indexed as

AcetylglucosaminidaseAmino Acid SequenceAnimalsBinding SitesCarbohydrate MetabolismCarbohydratesClostridium perfringensGalactoseHumansMolecular Dynamics SimulationMolecular Sequence DataProtein BindingProtein Structure, SecondarySubstrate SpecificityAcetylglucosaminidasealpha-N-acetyl-D-glucosaminidaseCarbohydratesGalactose

Identifiers

PMID22479408
PMCPMC3313936
OpenAlexW2073101435

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.