Table 1. Comparison of phenotype characteristics of strain E39T and closely related taxa.
| Characteristic | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Morphology | Coccus | Rod | Rod | Rod | Rod |
| Optimal temperature (°C) | 39 | ND | 35 | 37 | 37 |
| Optimal pH | 7.5 | ND | 7.0 | ND | ND |
| Enzyme activity (API Rapid ID 32a) * of | |||||
| Arginine arylamidase | – | – | – | – | + |
| β-glucuronidase | – | – | – | w | – |
| α-arabinosidase | – | – | – | + | – |
| α-glucosidase | – | + | – | – | + |
| Mannose fermentation | – | – | + | + | + |
| Raffinose fermentation | – | – | + | + | + |
| β-galactosidase 6 phosphate | w | – | w | – | + |
| Arginine dihydrolase | + | – | – | – | – |
| α-galactosidase | + | – | w | – | – |
| N-acetyl-β-glucosaminidase | + | – | + | – | + |
| α-fucosidases | + | + | – | – | + |
| Leucyl glycine arylamidase | + | + | – | – | + |
| Glutamyl glutamic acid arylamidase | + | + | – | – | + |
| Glutamic acid decarboxylase | + | + | – | w | w |
| Polar lipids†* | PE, APL, L | PE, APL | PE, APL, PL, L | PE, APL, L | PE, L |
| Major quinones* | MK-8, MK- 9 | MK-9 | MK-9 | MK-10, MK-11 | MK-7, MK-11 |
| DNA G+C content (mol%)‡ | 46.4 | 46.6 | 45.5 | 48.2 | 40.9 |
*Data were obtained from this study.
†PE, phosphatidylethanolamine; APL, unidentified aminophospholipid; PL, unidentified phospholipid; L, unidentified lipid.
‡The DNA G+C contents were calculated from the genome sequence.
Taxa: 1, strain E39T [this study]; 2, Alloprevotella tannerae ATCC 51259T [36]; 3, Alloprevotella rava 81/4-12T [35]; 4, Paraprevotella clara JCM 14859T [37]; 5, Prevotella melaninogenica ATCC 25845T [45]. All strains are positive for the following characteristics: activity* of β-galactosidase, alkaline phosphatase and alanine arylamidase. All strains are negative for the following characteristics: activity* of urease, β-glucosidase, proline arylamidase, phenylalanine arylamidase, leucine arylamidase, pyroglutamic acid arylamidase, tyrosine arylamidase, glycine arylamidase, histidine arylamidase and serine arylamidase, reduction of nitrates, and indole production. Symbols: +, positive;–, negative; w, weak; ND, not determined.