FIG. 1.

Sequence alignment of S. terrae PEG-DH and GMC oxidoreductases. Gaps, indicated by a dash, were introduced in the sequences to maximize homology. Identical amino acid residues are indicated by reversal letters. The amino acid residues of PEG-DH corresponding to the FAD-binding domain and the catalytic residues of GMC oxidoreductases are indicated by an asterisk and an arrowhead, respectively. Abbreviations: AO, aryl-alcohol oxidase from Pleurotus eryngii (18); MO, alcohol (methanol) oxidase from Candida boidinii (15); GO, glucose oxidase from Aspergillus niger (11); PD, PEG-DH from S. terrae; AD, alcohol dehydrogenases from Pseudomonas oleovorans (17); CD, choline dehydrogenase from E. coli (12); ND, 4-nitrobenzyl alcohol dehydrogenase from a Pseudomonas species (2); SD, l-sorbose dehydrogenase from Gluconobacter oxydans (14).