Evidence map›Paper›PMID 30729732›Full record

ArticleMicrobiologyOpen2019

Characterization of a phospholipid-regulated β-galactosidase from Akkermansia muciniphila involved in mucin degradation.

Konrad Kosciow, Uwe Deppenmeier

Open access · goldAbstract read
In one paragraph

Article in MicrobiologyOpen, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. The role ofFrontiers in medicine · 2025
    Pooled it
  2. Review
  3. Review
  4. Proteomic study ofFrontiers in microbiology · 2025
    Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Identification of α-L-fucosidase (ALFuc) of Blastocystis sp. subtypes ST1, ST2 and ST3.Revista do Instituto de Medicina Tropical de Sao Paulo · 2022
    Article
  12. Frontiers in gastroenterology (Lausanne, Switzerland) · 2022
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Gut microbes
    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

2 authors at 1 institution in 1 country.

Konrad KosciowInstitute of Microbiology and Biotechnology, University of Bonn, Bonn, Germany.
Uwe DeppenmeierInstitute of Microbiology and Biotechnology, University of Bonn, Bonn, Germany.ORCID 0000-0002-7810-7663
University of Bonn · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The gut microbe Akkermansia muciniphila is important for the human health as the occurrence of the organism is inversely correlated with different metabolic disorders. The metabolism of the organism includes the degradation of intestinal mucins. Thus, the gut health-promoting properties are not immediately obvious and mechanisms of bacteria-host interactions are mostly unclear. In this study, we characterized a novel extracellular β-galactosidase (Amuc_1686) with a preference for linkages from the type Galβ1-3GalNAc. Additionally, Amuc_1686 possesses a discoidin-like domain, which enables the interaction with anionic phospholipids. We detected a strong inhibition by phosphatidylserine, phosphatidylglycerol, phosphatidic acid, and lysophosphatidic acid while phosphatidylcholine and phosphatidylethanolamine had no influence. Amuc_1686 is the first example of a prokaryotic hydrolase that is strongly inhibited by certain phospholipids. These inhibiting phospholipids have important signal functions in immune response and cell clearance processes. Hence, Amuc_1686 might be regulated based on the health status of the large intestine and could therefore contribute to the mutualistic relationship between the microbe and the host on a molecular level. In this sense, Amuc_1686 could act as an altruistic enzyme that does not attack the mucin layer of apoptotic epithelial cells to ensure tissue regeneration, for example, in areas with inflammatory damages.

Indexed as

Gene Expression Regulation, EnzymologicAkkermansiabeta-GalactosidaseGastrointestinal TractHumansMucinsPhospholipidsProteolysisSubstrate SpecificityVerrucomicrobiabeta-GalactosidaseMucinsPhospholipidshuman gutintestinal tractmetabolic disordermicrobiotamucin-degrading bacteria

Identifiers

PMID30729732
PMCPMC6692548
OpenAlexW2912341812

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.