Clostridium fessum
What's this?
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Its ID gene: the stretch scientists read to tell microbes apart. Each bar is one letter of its DNA. Every species has its own order of letters, so the pattern works like a fingerprint. Close relatives share most of it.
16S rRNA gene, V4 region: the 253 letters between the standard primers (515F/806R), which are the same in every species. One reference sequence; strains can differ by a letter or two. NCBI NR_179173.1
Mid-sized for a gut microbe: longer than 49% of the 2,354 we have genomes for.
48% G+C, higher than 51% of gut microbes.
To scale: if its ID gene were 1 cm long, its genome would stretch 21 meters. Yours would stretch 21 kilometers. One reference genome; strains vary. NCBI GCF_027698965.1
What it can do
We don't have capability data for this microbe yet: it isn't in AGORA2's genome models, BacDive's lab tests or NJC19's published research. That's different from “not seen”: nobody has checked.
In healthy guts
Found in 68% of healthy people.
- largest Segatella copri 6.2%
- 2nd largest Phocaeicola vulgatus 5.0%
- 3rd largest Faecalibacterium prausnitzii 4.7%
- 4th largest Bacteroides uniformis 3.2%
- 5th largest Agathobacter rectalis 2.5%
- 6th largest Alistipes putredinis 2.3%
- 7th largest Bifidobacterium longum 2.1%
- 8th largest Ruminococcus bromii 1.8%
- top 90 Clostridium fessum 0.2%
- 2,169 other microbes, each a sliver 56.5%
- 15.6%
On average, 0.2% of the microbes in a healthy gut: among the 90 largest slices.
Every group, drawn the same way. Only some samples record age or sex, so each group says how many people it comes from. Tap one to see it above.
In conditions
Compared with healthy people in the same studies, it’s less common in 12 conditions and more common in none. Only studies that had both are counted.
A difference is an association: it doesn’t mean this microbe causes, prevents or treats any of these.
Strongest first, then the biggest gap · Each figure is 10 peopleIn studies of how people live
“Higher” is the study’s measure: on average, a bigger share of gut bacteria across everyone in the group, carriers or not. It isn’t how many people carry it. An association the authors report, measured once per person. It doesn’t mean a diet changes this microbe, or that the microbe affects health.
Recent research
Source: PubMed, U.S. National Library of Medicine · 7 linked papers, last 10 years