TABLE 2.
Levels of DNA relatedness of the clinical isolate to species of Providencia and Proteus
| Source of unlabeled DNA | Relatedness to labeled DNA from the clinical isolate (strain CDC 4562-98)
|
||
|---|---|---|---|
| Relative binding ratio at 60°C (%)a | Divergence (%)b | Relative binding ratio at 75°C (%)a | |
| Clinical isolate CDC 4562-98 (ATCC 700659) | 100 | 0.0 | 100 |
| Providencia heimbachae ATCC 35613T | 96 | 1.5 | 97 |
| Providencia heimbachae CDC 8027-83 | 94 | 1.0 | 93 |
| Providencia alcalifaciens CDC 3370-67 | 43 | 17.5 | 4 |
| Providencia rettgeri CDC 1163T (ATCC 29944) | 42 | 17 | 8 |
| Providencia stuartii CDC 2896-68T (ATCC 29914) | 42 | 16 | 6 |
| Providencia rustigianii CDC 132-68T (ATCC 33673) | 40 | 13.5 | 5 |
| Proteus mirabilis CDC PR-14T (ATCC 29906) | 29 | 19.5 | 2 |
| Proteus vulgaris CDC PR-1 (ATCC 29905) | 28 | 13.5 | 8 |
a
Relative binding ratios were determined as follows: (percentage of DNA bound to hydroxyapatite in heterologous reaction/percentage of DNA bound to hydroxyapatite in homologous reaction) × 100.
b
Divergence was calculated on the assumption that a 1% decrease in the thermal stability of a heterologous DNA duplex compared with the thermal stability of the homologous DNA duplex was caused by 1% of the bases within the duplex that were unpaired; divergence was calculated to the nearest 0.5%.