Evidence map›Paper›PMID 31399023›Full record

ArticleBMC genomics2019

Complete genome sequence analysis of the thermoacidophilic verrucomicrobial methanotroph "Candidatus Methylacidiphilum kamchatkense" strain Kam1 and comparison with its closest relatives.

Thomas Kruse, Chandini Murarilal Ratnadevi, Helge-André Erikstad, Nils-Kåre Birkeland

Abstract readComparative Study
In one paragraph

Article in BMC genomics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
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16citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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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

16 citing papers in PubMed.

  1. Review
  2. Linking microbes toFrontiers in microbiology · 2026
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

4 authors.

Thomas KruseDepartment of Biological Sciences, University of Bergen, P.O. Box 7803, 5020, Bergen, Norway. Thomas@theviking.dk.ORCID http://orcid.org/0000-0002-7551-1505
Chandini Murarilal RatnadeviDepartment of Biological Sciences, University of Bergen, P.O. Box 7803, 5020, Bergen, Norway.
Helge-André ErikstadDepartment of Biological Sciences, University of Bergen, P.O. Box 7803, 5020, Bergen, Norway.
Nils-Kåre BirkelandDepartment of Biological Sciences, University of Bergen, P.O. Box 7803, 5020, Bergen, Norway. Nils.birkeland@uib.no.ORCID https://orcid.org/0000-0001-6569-1920

Funding

Norges Forskningsråd 261923
6 · The paper itself

Abstract

backgroundThe candidate genus "Methylacidiphilum" comprises thermoacidophilic aerobic methane oxidizers belonging to the Verrucomicrobia phylum. These are the first described non-proteobacterial aerobic methane oxidizers. The genes pmoCAB, encoding the particulate methane monooxygenase do not originate from horizontal gene transfer from proteobacteria. Instead, the "Ca. Methylacidiphilum" and the sister genus "Ca. Methylacidimicrobium" represent a novel and hitherto understudied evolutionary lineage of aerobic methane oxidizers. Obtaining and comparing the full genome sequences is an important step towards understanding the evolution and physiology of this novel group of organisms.

resultsHere we present the closed genome of "Ca. Methylacidiphilum kamchatkense" strain Kam1 and a comparison with the genomes of its two closest relatives "Ca. Methylacidiphilum fumariolicum" strain SolV and "Ca. Methylacidiphilum infernorum" strain V4. The genome consists of a single 2,2 Mbp chromosome with 2119 predicted protein coding sequences. Genome analysis showed that the majority of the genes connected with metabolic traits described for one member of "Ca. Methylacidiphilum" is conserved between all three genomes. All three strains encode class I CRISPR-cas systems. The average nucleotide identity between "Ca. M. kamchatkense" strain Kam1 and strains SolV and V4 is ≤95% showing that they should be regarded as separate species. Whole genome comparison revealed a high degree of synteny between the genomes of strains Kam1 and SolV. In contrast, comparison of the genomes of strains Kam1 and V4 revealed a number of rearrangements. There are large differences in the numbers of transposable elements found in the genomes of the three strains with 12, 37 and 80 transposable elements in the genomes of strains Kam1, V4 and SolV respectively. Genomic rearrangements and the activity of transposable elements explain much of the genomic differences between strains. For example, a type 1h uptake hydrogenase is conserved between strains Kam1 and SolV but seems to have been lost from strain V4 due to genomic rearrangements.

conclusionsComparing three closed genomes of "Ca. Methylacidiphilum" spp. has given new insights into the evolution of these organisms and revealed large differences in numbers of transposable elements between strains, the activity of these explains much of the genomic differences between strains.

Indexed as

GenomicsAmino Acid SequenceBacterial ProteinsBiomassGenome, BacterialPhylogenySpecies SpecificityVerrucomicrobiaBacterial Proteins“Ca. Methylacidiphilum kamchatkense” strain Kam1Full genomeMethane oxidationMethanotrophThermoacidophile

Identifiers

PMID31399023
PMCPMC6688271

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