Acinetobacter baumannii
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_117620.1
Formerly Bacterium anitratum.
Large for a gut microbe: longer than 70% of the 2,354 we have genomes for.
39% G+C, higher than 25% of gut microbes.
To scale: if its ID gene were 1 cm long, its genome would stretch 27 meters. Yours would stretch 21 kilometers. One reference genome; strains vary. NCBI GCF_009035845.1
What it can do
- Can make lactic acid What yogurt bacteria make; other microbes turn it into butyrate.
Not seen in its genomes or lab tests: make butyrate, make propionate, ferment fiber, eat inulin, eat resistant starch, eat pectin, use lactose, feed on gut mucus, change bile acids, 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 156 genomes | — | No papers |
| Can make propionate | Not seen | 0 of 156 genomes | — | No papers |
| Can make lactic acid | Can | 156 of 156 genomes | — | No papers |
| Can ferment fiber | Not seen | 0 of 156 genomes | 0 of 4 strains · strip test | No papers |
| Can eat inulin | Not seen | 0 of 156 genomes | 0 of 4 strains · strip test | No papers |
| Can eat resistant starch | Not seen | 0 of 156 genomes | — | No papers |
| Can eat pectin | Not seen | 0 of 156 genomes | — | No papers |
| Can use lactose | Not seen | 0 of 156 genomes | 0 of 4 strains | No papers |
| Can feed on gut mucus | Not seen | 0 of 156 genomes | — | No papers |
| Can change bile acids | Not seen | 0 of 156 genomes | — | No papers |
| Can make B vitamins | Not seen | 0 of 156 genomes | — | No papers |
| Can make hydrogen sulfide | Not seen | 0 of 156 genomes | — | No papers |
| Can make methane | Not seen | 0 of 156 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 under 1% 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 15% Acinetobacter baumannii 0.02%
- 2,169 other microbes, each a sliver 56.7%
- 15.6%
On average, 0.02% of the microbes in a healthy gut: larger than 85% of species’ 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.