Fig 2.
Sequence alignment of Sul-rdhA gene fragments for rdhA-specific T-RFLP analysis. Sequences were aligned with ClustalX. The Sul-rdhA primers used in the dedicated T-RFLP analysis match the sequences of all 3 rdhA genes present in Sulfurospirillum spp. and are indicated above the alignment. Positions indicated by dashes represent a 12-nucleotide deletion in the sequence of pceATCE. Positions indicated by dots are identical to the sequence of pceATCE. A box indicates the position of the TaqI restriction site.