Evidence map›Paper›PMID 28857034›Full record

ArticleMicrobiology (Reading, England)2017

Discovery of a novel lantibiotic nisin O from Blautia obeum A2-162, isolated from the human gastrointestinal tract.

Diane Hatziioanou, Cristina Gherghisan-Filip, Gerhard Saalbach, Nikki Horn, Udo Wegmann, Sylvia H Duncan, Harry J Flint, Melinda J Mayer, Arjan Narbad

Open access · hybridAbstract read
In one paragraph

Article in Microbiology (Reading, England), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 3 pooled it
10.0field-weighted citation impact, top 2% 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

68 citing papers in PubMed, 3 syntheses or guidelines pooled it, 112 citations in OpenAlex.

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  14. A gut-derivedmBio · 2025
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8 more citing papers are in PubMed but not listed here.

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

9 authors at 3 institutions in 1 country.

Diane HatziioanouGut Health and Food Safety Institute Strategic Programme, Quadram Institute Bioscience, Colney, Norwich, NR4 7UA, UK.
Cristina Gherghisan-FilipGut Health and Food Safety Institute Strategic Programme, Quadram Institute Bioscience, Colney, Norwich, NR4 7UA, UK.
Gerhard SaalbachJohn Innes Centre, Norwich Research Park, Norwich, NR4 7UA, UK.
Nikki HornGut Health and Food Safety Institute Strategic Programme, Quadram Institute Bioscience, Colney, Norwich, NR4 7UA, UK.
Udo WegmannGut Health and Food Safety Institute Strategic Programme, Quadram Institute Bioscience, Colney, Norwich, NR4 7UA, UK.
Sylvia H DuncanGut Health Group, Rowett Institute, University of Aberdeen, Foresterhill, Aberdeen, UK.
Harry J FlintGut Health Group, Rowett Institute, University of Aberdeen, Foresterhill, Aberdeen, UK.
Melinda J MayerGut Health and Food Safety Institute Strategic Programme, Quadram Institute Bioscience, Colney, Norwich, NR4 7UA, UK.
Arjan NarbadGut Health and Food Safety Institute Strategic Programme, Quadram Institute Bioscience, Colney, Norwich, NR4 7UA, UK.
Quadram Institute · GBUniversity of Aberdeen · GBNorwich Research Park · GB

Funding

Biotechnology and Biological Sciences Research Council BB/J004529/1Biotechnology and Biological Sciences Research Council BBS/E/F/00044453Biotechnology and Biological Sciences Research Council IFR/08/1
6 · The paper itself

Abstract

A novel lanC-like sequence was identified from the dominant human gut bacterium Blautia obeum strain A2-162. This sequence was extended to reveal a putative lantibiotic operon with biosynthetic and transport genes, two sets of regulatory genes, immunity genes, three identical copies of a nisin-like lanA gene with an unusual leader peptide, and a fourth putative lanA gene. Comparison with other nisin clusters showed that the closest relationship was to nisin U. B. obeum A2-162 demonstrated antimicrobial activity against Clostridium perfringens when grown on solid medium in the presence of trypsin. Fusions of predicted nsoA structural sequences with the nisin A leader were expressed in Lactococcus lactis containing the nisin A operon without nisA. Expression of the nisA leader sequence fused to the predicted structural nsoA1 produced a growth defect in L. lactis that was dependent upon the presence of biosynthetic genes, but failed to produce antimicrobial activity. Insertion of the nso cluster into L. lactis MG1614 gave an increased immunity to nisin A, but this was not replicated by the expression of nsoI. Nisin A induction of L. lactis containing the nso cluster and nisRK genes allowed detection of the NsoA1 pre-peptide by Western hybridization. When this heterologous producer was grown with nisin induction on solid medium, antimicrobial activity was demonstrated in the presence of trypsin against C. perfringens, Clostridium difficile and L. lactis. This research adds to evidence that lantibiotic production may be an important trait of gut bacteria and could lead to the development of novel treatments for intestinal diseases.

Indexed as

Amino Acid SequenceBacteriocinsCloning, MolecularEubacterialesGastrointestinal TractGene LibraryGene OrderGenes, BacterialHumansMicrobial ViabilityMultigene FamilyNisinPhenotypePlasmidsSequence Analysis, DNABacteriocinsNisin

Identifiers

PMID28857034
PMCPMC5882112
OpenAlexW2752625644

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.