Alignment of the sequences of human glutathione reductase, human high-molecular weight thioredoxin reductase, human dihydrolipoamide dehydrogenase, trypanothione reductase from Trypanosoma cruzi, mercuric ion reductase from Pseudomonas aeruginosa, mycothione reductase from Mycobacterium tuberculosis, hypothiocyanous acid reductase from Streptococcus pneumoniae, glutathione amide reductase from Marichromatium gracile, doluble pyridine dinucleotide transhydrogenase from Escherichia coli, thioredoxin glutathione reductase from Schistosoma mansoni, low-molecular-weight thioredoxin reductase from E. coli, alkyl hydroperoxide reductase subunit F from E. coli, Bacillithiol disulfide reductase from Staphylococcus aureus, NADH peroxidase from Enterococcus faecalis, nNADH oxidase from Levilactobacillus brevis, NADH-dependent persulfide reductase from Archaeoglobus fulgidus, coenzyme A disulfide reductase from S. aureus, 2-ketopropyl-coenzyme M reductase/carboxylase from Xanthobacter autotrophicus, human apoptosis inducin factor 1, biphenyl dioxygenase subunit A from Acidovorax sp., rubredoxin reductase from P. aeruginosa, monodehydroascorbate reductase from Deschampsia antarctica, putidaredoxin reductase from P. putida, toluene dioxygenase subunit A from P. putida and 2,4-dienoyl-CoA reductase from E. coli.