Phylogeny of bacterial and human thioredoxin and glutathione reductases (TR and GR, respectively). The deduced amino acid sequences of thioredoxin reductase were determined for the proteins from Brucella suis (GenBank AE014445), Chlamydia pneumoniae (SwissProt Q9Z8M4), Clostridium tetani (SwissProt Q890T3), Coxiella burnetii (GenBank X75627), Escherichia coli (SwissProt P09625), Haemophilus influenzae (SwissProt P43788), Helicobacter pylori (SwissProt P56431), Homo sapiens 1 (SwissProt Q16881), H. sapiens 2 (GenBank AF171055), H. sapiens 3 (GenBank AF171054), Listeria monocytogenes (SwissProt O32823), Mycobacterium leprae (SwissProt P46843), Mycobacterium tuberculosis (SwissProt P52214), Mycoplasma genitalium (SwissProt P47348), Neisseria meningitides (GenBank AL162756), Pseudomonas aeruginosa (SwissProt Q9I0M2), Rickettsia prowazekii (SwissProt Q9ZD33), Staphylococcus aureus (SwissProt O54079), Streptococcus pyogenes (SwissProt Q878I8), Treponema pallidum (SwissProt O83790), Vibrio cholerae (SwissProt Q9KSS4), and Yersinia pestis (Swiss Prot: Q8ZGC9). Deduced amino acid sequences of glutathione reductases used were from Escherichia coli (SwissProt P06715), Haemophilus influenzae (SwissProt P43783), Homo sapiens (SwissProt P00390), and Streptococcus pyogenes (GenBank AE014147).