Evidence map›Paper›PMID 34158629›Full record

ArticleThe ISME journal2021

Verrucomicrobial methanotrophs grow on diverse C3 compounds and use a homolog of particulate methane monooxygenase to oxidize acetone.

Samuel Imisi Awala, Joo-Han Gwak, Yong-Man Kim, So-Jeong Kim, Andrea Strazzulli, Peter F Dunfield, Hyeokjun Yoon, Geun-Joong Kim, Sung-Keun Rhee

Open access · hybridAbstract read
In one paragraph

Article in The ISME journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 8% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 53 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Microbial oxidation significantly reduces methane export from global groundwaters.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  10. "mSphere · 2024
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  11. Review
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  18. Sulfur and methane oxidation by a single microorganism.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  19. Article
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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

9 authors at 6 institutions in 3 countries.

Samuel Imisi AwalaDepartment of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea.ORCID http://orcid.org/0000-0002-2553-1604
Joo-Han GwakDepartment of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea.ORCID http://orcid.org/0000-0002-0464-4722
Yong-Man KimDepartment of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea.ORCID http://orcid.org/0000-0002-4851-9755
So-Jeong KimGeologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, 34132, Republic of Korea.
Andrea StrazzulliDepartment of Biology, University of Naples "Federico II", Complesso Universitario Di Monte S. Angelo, Via Cupa Nuova Cinthia 21, 80126, Naples, Italy.ORCID http://orcid.org/0000-0002-9690-149X
Peter F DunfieldDepartment of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada.ORCID http://orcid.org/0000-0002-9319-4697
Hyeokjun YoonBiological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42 Hwangyeong-ro, Seo-gu, Incheon, 22689, Republic of Korea.
Geun-Joong KimDepartment of Biological Sciences and Research Center of Ecomimetics, College of Natural Sciences, Chonnam National University, Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea.
Sung-Keun RheeDepartment of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea. rhees@chungbuk.ac.kr.ORCID http://orcid.org/0000-0003-2111-7999
Chungbuk National University · KRChonnam National University · KRKorea Institute of Geoscience and Mineral Resources · KRNational Institute of Biological Resources · KRUniversity of Calgary · CAUniversity of Naples Federico II · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Short-chain alkanes (SCA; C2-C4) emitted from geological sources contribute to photochemical pollution and ozone production in the atmosphere. Microorganisms that oxidize SCA and thereby mitigate their release from geothermal environments have rarely been studied. In this study, propane-oxidizing cultures could not be grown from acidic geothermal samples by enrichment on propane alone, but instead required methane addition, indicating that propane was co-oxidized by methanotrophs. "Methylacidiphilum" isolates from these enrichments did not grow on propane as a sole energy source but unexpectedly did grow on C3 compounds such as 2-propanol, acetone, and acetol. A gene cluster encoding the pathway of 2-propanol oxidation to pyruvate via acetol was upregulated during growth on 2-propanol. Surprisingly, this cluster included one of three genomic operons (pmoCAB3) encoding particulate methane monooxygenase (PMO), and several physiological tests indicated that the encoded PMO3 enzyme mediates the oxidation of acetone to acetol. Acetone-grown resting cells oxidized acetone and butanone but not methane or propane, implicating a strict substrate specificity of PMO3 to ketones instead of alkanes. Another PMO-encoding operon, pmoCAB2, was induced only in methane-grown cells, and the encoded PMO2 could be responsible for co-metabolic oxidation of propane to 2-propanol. In nature, propane probably serves primarily as a supplemental growth substrate for these bacteria when growing on methane.

Indexed as

AcetoneOxygenasesMethaneOxidation-ReductionVerrucomicrobiaAcetoneMethanemethane monooxygenaseOxygenases

Identifiers

PMID34158629
PMCPMC8630023
OpenAlexW3177213766

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.