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Sutterella faecalis sp. nov., isolated from human faeces.

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A novel bacterial species, Sutterella faecalis, was identified from human feces. This obligate anaerobe expands our understanding of the Sutterella genus in the human gut microbiome.

Keywords:
Sutterella faecalis sp. nov.human faecesmicrobiometaxonomy

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Area of Science:

  • Microbiology
  • Gut Microbiome Research
  • Bacterial Taxonomy

Background:

  • The human gut harbors a complex microbial community, including anaerobic bacteria.
  • The genus Sutterella comprises anaerobic bacteria found in the gastrointestinal tract.
  • Characterization of novel species is crucial for understanding microbial diversity and function.

Purpose of the Study:

  • To isolate and characterize a novel bacterial strain from human feces.
  • To determine the phylogenetic, physiological, and chemotaxonomic properties of the novel isolate.
  • To propose a new species within the Sutterella genus.

Main Methods:

  • Isolation of bacterial strain KGMB03119T from human fecal sample.
  • Phylogenetic analysis using 16S rRNA gene sequencing.
  • Whole genome sequencing for DNA G+C content determination.
  • Physiological tests (enzyme activities, catalase, oxidase, urease) and chemotaxonomic analysis (fatty acids, isoprenoid quinones).

Main Results:

  • Strain KGMB03119T is an obligately anaerobic, Gram-negative coccobacillus.
  • Phylogenetic analysis places the isolate within the Sutterella genus, closely related to S. wadsworthensis.
  • Strain KGMB03119T exhibits specific enzymatic activities and a distinct cellular fatty acid and isoprenoid quinone profile.
  • DNA G+C content is 58.3 mol%.

Conclusions:

  • Strain KGMB03119T represents a novel species, Sutterella faecalis sp. nov.
  • This finding contributes to the taxonomic classification of the Sutterella genus.
  • The characterization provides a basis for future studies on the role of S. faecalis in the human gut.