Fig. 12

Schematic of the structure of an apparent operon associated with a β-galactosidase/β-glucosidase gene (Aaci_1895) in A. acidocaldarius strain DSM 446, and comparison to a similar operon in a number of Thermoanaerobacter species. a A. acidocaldarius strain DSM 446, b T. siderophilis strain SR4, c T. italicus strain Ab9, d T. ethanolicus strain JW 200. Dashed lines show glycoside hydrolase bearing similarity to Aaci_1895. Opp indicates various components of annotated ATP-binding cassette transporter for dipeptides, and GH indicates glycoside hydrolases