TABLE 4.
Differential diagnosis of Curtobacterium spp. from other medically relevant, yellow- or orange-pigmented coryneform bacteria other than Corynebacteriuma
| Characteristic | Curtobacterium | Brevibacteriumb | Cellulomonas | Cellulosimicrobium | Exiguobacterium | Leifsonia | Microbacterium |
|---|---|---|---|---|---|---|---|
| Type of metabolismc | O | O | F | F | F | O | O/F |
| Nitrate reduction | − | Vd | + | + | V | V | V |
| Urease | − | − | − | − | − | − | V |
| Esculin hydrolysis | + | − | + | + | + | V | V |
| Major fatty acids | 15:0ai | 15:0ai | 15:0ai | 15:0ai | 17:0i | 17:0ai | 15:0ai |
| 17:0ai | 17:0ai | 16:0 | 15:0i | 15:0i | 15:0ai | 17:0ai | |
| 15:0i | 17:0ai | 16:0 | 16:0i | 16:0i | |||
| Diamino acide | ORN | m-DAP | ORN | LYS | LYS | DAB | LYS, ORN |
| Acyl type | Acetyl | Acetyl | Acetyl | Acetyl | NDf | ND | Glycolyl |
a
Data are from reference 5.
b
Most Brevibacterium strains are whitish-grayish.
c
O, oxidative; F, fermentative.
d
V, variable.
e
ORN, ornithine; m-DAP, meso-diaminopimelic acid; LYS, lysine; DAB, diaminobutyric acid.
f
ND, no data.