Evidence map›Paper›PMID 29038461›Full record

ArticleScientific reports2017

The Bacteroidales produce an N-acylated derivative of glycine with both cholesterol-solubilising and hemolytic activity.

Alli Lynch, Elaine Crowley, Eoghan Casey, Rafael Cano, Rachel Shanahan, Ger McGlacken, Julian R Marchesi, David J Clarke

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. 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
0.8field-weighted citation impact, top 28% 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, 42 citations in OpenAlex.

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  6. Synthesis ofMolecules (Basel, Switzerland) · 2024
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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

8 authors at 2 institutions in 2 countries.

Alli LynchSchool of Microbiology, University College Cork, Cork, Ireland.
Elaine CrowleyAPC Microbiome Institute, University College Cork, Cork, Ireland.
Eoghan CaseyAPC Microbiome Institute, University College Cork, Cork, Ireland.
Rafael CanoDepartment of Chemistry, University College Cork, Cork, Ireland.
Rachel ShanahanDepartment of Chemistry, University College Cork, Cork, Ireland.
Ger McGlackenDepartment of Chemistry, University College Cork, Cork, Ireland.
Julian R MarchesiSchool of Biosciences, Cardiff University, Museum Avenue, Cardiff CF10 3AX, UK and Centre for Digestive and Gut Health, Imperial College London, London, W2 1NY, UK.ORCID 0000-0002-7994-5239
David J ClarkeSchool of Microbiology, University College Cork, Cork, Ireland. david.clarke@ucc.ie.ORCID 0000-0001-9082-0501
University College Cork · IEImperial College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The contribution of the gut microbiota to the metabolism of cholesterol is not well understood. In this study, we identify 21 fosmid clones from a human gut microbiome metagenomic library that, when expressed in Escherichia coli, produce halos on LB agar supplemented with 0.01% (w/v) cholesterol (LBC agar). Analysis of 14 of these clones revealed that they all share a fragment of DNA with homology to the genome of Bacteroides vulgatus. The gene responsible for halo production on LBC agar, named choA, was identified as an N-acyltransferase known to produce an acylated glycine molecule called commendamide. In this study we show that commendamide is capable of producing a halo on LBC agar suggesting that this molecule is solubilizing the cholesterol micelles in LBC agar. We also show that commendamide is responsible for the previously described hemolytic activity associated with the choA orthologue in Bacteroides fragilis. A functional analysis of ChoA identified 2 amino acids that are important for commendamide biosynthesis and we present phylogenetic and functional data showing that orthologues of choA are found only in the order Bacteroidales. Therefore, the production of commendamide may be an adaptation to the environments colonized by the Bacteroidales, including the mammalian gut.

Indexed as

BacteroidesBacteroides fragilisCholesterolEscherichia coliGastrointestinal MicrobiomeGlycineHemolysisPhylogenyCholesterolGlycine

Identifiers

PMID29038461
PMCPMC5643525
OpenAlexW2762410247

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.