| Species | Count |
| Anopheles gambiae |
3 |
| Aquifex aeolicus vf5 |
2 |
| Arabidopsis thaliana |
10 |
| Ashbya gossypii |
4 |
| Aspergillus nidulans |
7 |
| Bacillus subtilis |
3 |
| Bacteroides thetaiotaomicron |
2 |
| Bos taurus |
4 |
| Bradyrhizobium japonicum |
7 |
| Caenorhabditis briggsae |
4 |
| Caenorhabditis elegans |
4 |
| Canis familiaris |
5 |
| Chlamydomonas reinhardtii |
3 |
| Chloroflexus aurantiacus |
3 |
| Ciona intestinalis |
3 |
| Danio rerio |
3 |
| Deinococcus radiodurans |
3 |
| Dictyostelium discoideum |
2 |
| Drosophila melanogaster |
6 |
| Entamoeba histolytica |
1 |
| Escherichia coli |
3 |
| Fugu rubripes |
3 |
| Gallus gallus |
2 |
| Geobacter sufurreducens |
1 |
| Gloeobacter violaceus |
2 |
| Homo sapiens |
3 |
| Leishmania major |
1 |
| Leptospira interrogans |
2 |
| Macaca mulatta |
3 |
| Methanosarcina acetivorans c2a |
3 |
| Monodelphis domestica |
4 |
| Mus musculus |
4 |
| Neurospora crassa |
4 |
| Ornithorhynchus anatinus |
2 |
| Oryza sativa |
4 |
| Pan troglodytes |
1 |
| Pseudomonas aeruginosa |
2 |
| Rattus norvegicus |
4 |
| Saccharomyces cerevisiae |
4 |
| Schizosaccharomyces pombe |
4 |
| Streptomyces coelicolor |
1 |
| Strongylocentrotus purpuratus |
6 |
| Sulfolobus solfataricus p2 |
2 |
| Tetrahymena thermophila |
2 |
| Thermotoga maritima |
1 |
| Xenopus tropicalis |
4 |
catalytic activity
oxidoreductase activity
