Evidence map›Paper›PMID 41247846›Full record

ArticleEnvironmental microbiology reports2025

Beyond Methane Oxidation: The Protein Landscape of ANME-2a Reveals an Integrated System for Diazotrophy and Membrane Fortification.

Samuel de Souza E Silva, Natanael Borges de Avila, Alisson William da Silva, Lucas Ramos Fernandes da Silva, Matheus Ribeiro Prado, Murilo Alves Beppler, Anderson Rodrigues Dos Santos

Abstract read
In one paragraph

Article in Environmental microbiology reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Article
  2. 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

7 authors.

Samuel de Souza E SilvaBiotechnology Institute, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0009-0005-8836-4531
Natanael Borges de AvilaBiotechnology Institute, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0009-0002-8812-4368
Alisson William da SilvaFaculty of Computing, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0009-0008-5794-2708
Lucas Ramos Fernandes da SilvaInformation Management Department, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0009-0007-5583-401X
Matheus Ribeiro PradoInformation Management Department, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0009-0003-2670-4022
Murilo Alves BepplerFaculty of Computing, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0009-0007-9329-1095
Anderson Rodrigues Dos SantosFaculty of Computing, Federal University of Uberlândia, Uberlândia, Brazil.ORCID https://orcid.org/0000-0003-3418-0823

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Finance Code 001Fundação de Amparo à Pesquisa do Estado de Minas GeraisUniversidade Federal de Uberlândia
6 · The paper itself

Abstract

While renowned for mitigating methane emissions via anaerobic oxidation of methane (AOM), the full ecological strategy of ANME-2a archaea still requires further exploration. This study looks beyond methane oxidation to map the protein landscape of ANME-2a, revealing an integrated system for metabolic autonomy and environmental resilience in this specific isolate. Using a feature-based protein network derived from 230 Methanosarcinales genomes, we uncovered a sophisticated modular architecture. Key findings demonstrate that the AOM machinery is not isolated but functionally coupled with distinct modules dedicated to auxiliary functions. Our analysis not only confirms that this ANME-2a isolate possesses the complete genomic toolkit for autonomous diazotrophy but also reveals the molecular blueprint for its integration with AOM. We show how key machinery has been specialised to support the organism's core energy metabolism, with its core nitrogenase components co-clustered within the same functional module as AOM electron transfer proteins. Furthermore, we identified a specialised module dedicated to 'membrane fortification' through the significant enrichment of pathways for archaeal lipid biosynthesis. This modular blueprint, which integrates core energy metabolism with nitrogen fixation and structural lipid production, provides a model for how diazotrophic ANME-2a lineages may thrive as robust, self-sufficient organisms adapted to dynamic, resource-limited ecosystems.

Indexed as

Archaeal ProteinsMethaneMethanosarcinalesNitrogen FixationAnaerobiosisEnergy MetabolismGenome, ArchaealNitrogenaseOxidation-ReductionArchaeal ProteinsMethaneNitrogenaseanaerobic methane oxidation (AOM)ANME‐2aarchaeal lipidsdiazotrophymetabolic modularityniche adaptationprotein network

Identifiers

PMID41247846
PMCPMC12622379

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Registered trials

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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.