| Strain | alkB Gene | Similarity to alkB Gene [alkB R2 Type] (%)* | Type of alkB gene |
| R. rhodochrous NBRC15564 | + | 100 | alkB R2 |
| R. baikonurensis NBRC100611 | + | 99.7 | alkB R2 |
| R. wratislaviensis NBRC100605 | + | 22.6 | alkB RW |
| R. opacus NBRC100624 | + | 23.4 | alkB ROP |
| R. ruber NBRC15591 | + | 30.5 | alkB RR |
| R. equi NBRC101255 | + | 78.3 | alkB RE |
| R. percolatus NBRC100626 | + | 21.9 | alkB ROP |
| R. jostii NBRC16295 | + | 30.1 | alkB RJ |
| R. triatomae NBRC103116 | + | 30.1 | alkB R1 |
| R. koreensis NBRC100607 | + | 30.5 | alkB RK |
| R. corynebacterioides NBRC14404 | + | 24.1 | alkB RC |
| R. zopfii NBRC100606 | + | 30.7 | alkB RZ |
| R. tukisamuensis NBRC100609 | − |
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| R. maanshanensis NBRC100610 | − |
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| R. pyridinivorans NBRC100608 | − |
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| R. kroppenstedtii NBRC103113 | − |
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| R. rhodnii NBRC100604 | − |
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| R. coprophilus NBRC100603 | − |
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