1. 
   Microbe Pseudomonadota

   Diaphorobacter nitroreducens NameName close to Nitrobacteraceae
   under 1% of healthy people
2. 
   Microbe Pseudomonadota

   Caulobacteraceae NameName close to Nitrobacteraceae
3. 
   Microbe Pseudomonadota

   Lysobacteraceae bacterium NML93-0831 Unnamed strain NameName close to Nitrobacteraceae
   under 1% of healthy people
4. 
   Microbe Pseudomonadota

   Variibacter NameIn the family Nitrobacteraceae
5. 
   Microbe Thermodesulfobacteriota

   Geobacteraceae NameName close to Nitrobacteraceae
6. 
   Microbe Actinomycetota

   Ilumatobacteraceae NameName close to Nitrobacteraceae
7. 
   Microbe Pseudomonadota

   Lysobacteraceae bacterium CU05-9 Unnamed strain NameName close to Nitrobacteraceae
   under 1% of healthy people
8. 
   Microbe Pseudomonadota

   Bradyrhizobium denitrificans NameIn the family Nitrobacteraceae
   under 1% of healthy people
9. 
   Microbe Pseudomonadota

   Xanthobacteraceae NameName close to Nitrobacteraceae
10. 
    Microbe Pseudomonadota

    Bradyrhizobium japonicum NameIn the family Nitrobacteraceae
11. 
    Microbe Pseudomonadota

    Afipia NameIn the family Nitrobacteraceae
    under 1% of healthy people
12. 
    Microbe Pseudomonadota

    Citrobacter MeaningAbout Nitrobacteraceae
    8.3% of healthy people
13. 
    Microbe Pseudomonadota

    Rhodopseudomonas NameIn the family Nitrobacteraceae
14. 
    Microbe Nitrososphaerota

    Nitrososphaeraceae MeaningAbout Nitrobacteraceae
15. 
    Microbe Pseudomonadota

    Bradyrhizobium NameIn the family Nitrobacteraceae
    under 1% of healthy people
16. 
    Microbe Actinomycetota

    Solirubrobacteraceae NameName close to Nitrobacteraceae
17. 
    Microbe Nitrososphaerota

    Nitrosotaleaceae MeaningAbout Nitrobacteraceae
18. 
    Microbe Bacteroidota

    Nibribacter MeaningAbout Nitrobacteraceae
19. 
    Microbe Pseudomonadota

    Nitrococcaceae MeaningAbout Nitrobacteraceae
20. 
    Microbe Pseudomonadota

    Bradyrhizobium diazoefficiens NameIn the family Nitrobacteraceae
21. Research Microbiology spectrum · 2022 Animal study

    Paraphocaeicola brunensis gen. nov., sp. nov., Carrying Two Variants of nimB Resistance Gene from Bacteroides fragilis, and Caecibacteroides pullorum gen. nov., sp. nov., Two Novel Genera Isolated from Chicken Caeca.

    Bacteroides fragilis

    MeaningAbout Nitrobacteraceae
    PubMed ↗
22. Research Systematic and applied microbiology · 2026

    Identification and characterization of four novel gut bacterial taxa: Alvibacillus kangbaii gen. nov., sp. nov., Jutongia huiwenae sp. nov., Flintibacter aciditolerans sp. nov., and Dizhoua hominis gen. nov., sp. nov. isolated from human feces.

    Anaeromassilibacillus senegalensis

    MeaningAbout Nitrobacteraceae
    PubMed ↗
23. 
    Microbe Thermomicrobiota

    Nitrolancea MeaningAbout Nitrobacteraceae
24. 
    Microbe Verrucomicrobiota

    Chthoniobacteraceae NameName close to Nitrobacteraceae
25. 
    Microbe Pseudomonadota

    Tardiphaga NameIn the family Nitrobacteraceae
26. 
    Microbe Pseudomonadota

    Rhodoplanes NameIn the family Nitrobacteraceae
27. 
    Microbe Pseudomonadota

    Bradyrhizobium elkanii NameIn the family Nitrobacteraceae
    under 1% of healthy people
28. Research The FEBS journal · 2025

    Distribution and activity of nitrate and nitrite reductases in the microbiota of the human intestinal tract.

    Escherichia coli

    MeaningAbout Nitrobacteraceae
    PubMed ↗
29. 
    Microbe Pseudomonadota

    Afipia birgiae NameIn the family Nitrobacteraceae
30. 
    Microbe Pseudomonadota

    Nitrosomonas MeaningAbout Nitrobacteraceae
    under 1% of healthy people
31. Research Nature communications · 2023

    The genomic landscape of reference genomes of cultivated human gut bacteria.

    Collinsella aerofaciens

    MeaningAbout Nitrobacteraceae
    PubMed ↗
32. 
    Microbe Pseudomonadota

    Steroidobacteraceae NameName close to Nitrobacteraceae
33. 
    Microbe Nitrospirota

    Nitrospira MeaningAbout Nitrobacteraceae
34. Research International journal of systematic and evolutionary microbiology · 2021

    Blautia intestinalis sp. nov., isolated from human feces.

    Blautia obeum

    MeaningAbout Nitrobacteraceae
    PubMed ↗
35. 
    Microbe Nitrospinota

    Nitrospina MeaningAbout Nitrobacteraceae
36. 
    Microbe Pseudomonadota

    Afipia broomeae NameIn the family Nitrobacteraceae
    under 1% of healthy people
37. Research mSphere · 2020

    Acinetobacter baumannii NCIMB8209: a Rare Environmental Strain Displaying Extensive Insertion Sequence-Mediated Genome Remodeling Resulting in the Loss of Exposed Cell Structures and Defensive Mechanisms.

    Klebsiella pneumoniaeEnterococcus faecium

    MeaningAbout Nitrobacteraceae
    PubMed ↗
38. 
    Microbe Pseudomonadota

    Nitrosospira MeaningAbout Nitrobacteraceae
39. Research Scientific reports · 2019 Animal study

    Comparative analysis of intestinal bacteria among venom secretion and non-secrection snakes.

    [Clostridium] innocuum

    MeaningAbout Nitrobacteraceae
    PubMed ↗
40. Research International journal of systematic and evolutionary microbiology · 2022

    Pararoseburia lenta gen. nov., sp. nov. isolated from human faeces.

    Roseburia faecisRoseburia hominis

    MeaningAbout Nitrobacteraceae
    PubMed ↗

Research: PubMed, U.S. National Library of Medicine · citations link to PubMed