Phocaeicola vulgatus
What's this?
- T
- A
- T
- C
- T
- T
- G
- A
- G
- T
- G
- C
- A
- G
- T
- T
- G
- A
- G
- G
- C
- A
- G
- G
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_112946.1
Formerly Bacteroides vulgatus.
Large for a gut microbe: longer than 88% of the 2,354 we have genomes for.
Bigger genomes usually carry more tools: it can do 7 of the 13 things we track, more than most gut microbes. See what it can do →
42% G+C, higher than 34% of gut microbes.
To scale: if its ID gene were 1 cm long, its genome would stretch 34 meters. Yours would stretch 21 kilometers. One reference genome; strains vary. NCBI GCF_000012825.1
What it can do
- Can make propionate A short-chain fatty acid, mostly used by the liver.
- Can make lactic acid What yogurt bacteria make; other microbes turn it into butyrate.
- Can ferment fiber Breaks down dietary fiber that our own enzymes can't.
- Can eat inulin A fiber in onions, garlic, leeks, chicory and bananas (also sold as FOS).
- Mixed evidence Can eat pectin A fiber in apples, citrus and other fruit. Published research reports it; genome analysis found it in none of 25 genomes.
- Can use lactose The sugar in milk and dairy.
Not seen in its genomes: make butyrate, eat resistant starch, make B vitamins, make hydrogen sulfide, make methane.
All 13 capabilities and their evidence
| Capability | Verdict | Genome analysis | Lab tests | Published research |
|---|---|---|---|---|
| Can make butyrate | Not seen | 0 of 25 genomes | — | No papers |
| Can make propionate | Can | 25 of 25 genomes | — | Papers say yes |
| Can make lactic acid | Can | 25 of 25 genomes | — | No papers |
| Can ferment fiber | Can | 25 of 25 genomes | 8 of 8 strains · strip test | Papers say yes |
| Can eat inulin | Can | 25 of 25 genomes | — | Papers say no Species descriptions often rest on the same strip tests, so this doesn't override the genomes. |
| Can eat resistant starch | Not seen | 0 of 25 genomes | — | No papers |
| Can eat pectin | Mixed evidence | 0 of 25 genomes | — | Papers say yes |
| Can use lactose | Can | 25 of 25 genomes | 1 of 1 strain | Papers say yes |
| Can feed on gut mucus | Can | 25 of 25 genomes | — | Papers say yes |
| Can change bile acids | Can | 1 of 25 genomes | — | Papers say yes |
| Can make B vitamins | Not seen | 0 of 25 genomes | — | No papers |
| Can make hydrogen sulfide | Not seen | 0 of 25 genomes | — | No papers |
| Can make methane | Not seen | 0 of 25 genomes | — | No papers |
AGORA2 (Heinken et al. 2023) via VMH, CC BY 4.0 · BacDive (DSMZ), CC BY 4.0 · NJC19 (Lim et al., Scientific Data 2020), CC0
In healthy guts
Found in 82% 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%
- 2,170 other microbes, each a sliver 56.7%
- 15.6%
On average, 5.0% of the microbes in a healthy gut: the 2nd largest slice.
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 4 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 · 398 linked papers, last 10 years