Table 1.
Phenotype of gene inactivation in the mtn region.
| Gene name | Strain | Growth on MTR as sole sulfur source |
| Wild type +O2a | 168 | normal growth after four days |
| Wild type -O2a | 168 | no growth after four days |
| mtnS (ykrS)b | BSHP7010 | no growth |
| mtnK (ykrT) | BFS1850 | no growth |
| mtnU (ykrU) | BFS1851 | no growth (numerous revertants) |
| mtnV (ykrV) | BSHP7020 | normal growth |
| mtnW (ykrW) | BSHP7014 | no growth |
| mtnX (ykrX) | BFS1852 | normal growth |
| mtnY (ykrY) | BSHP7016 | no growth |
| mtnZ (ykrZ) | BFS1853 | weak residual growth |
a. See Materials and methods; nitrate was used as an electron acceptor. b. Former gene names are given in brackets.