| Chain | GOid | namespace | contents |
| A | 0003824 | molecular_function | catalytic activity |
| A | 0004601 | molecular_function | peroxidase activity |
| A | 0005506 | molecular_function | iron ion binding |
| A | 0006084 | biological_process | acetyl-CoA metabolic process |
| A | 0015948 | biological_process | methanogenesis |
| A | 0016151 | molecular_function | nickel cation binding |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0019385 | biological_process | methanogenesis, from acetate |
| A | 0042542 | biological_process | response to hydrogen peroxide |
| A | 0043885 | molecular_function | anaerobic carbon-monoxide dehydrogenase activity |
| A | 0046872 | molecular_function | metal ion binding |
| A | 0050418 | molecular_function | hydroxylamine reductase activity |
| A | 0051536 | molecular_function | iron-sulfur cluster binding |
| A | 0051539 | molecular_function | 4 iron, 4 sulfur cluster binding |
| A | 0098869 | biological_process | cellular oxidant detoxification |
| B | 0003824 | molecular_function | catalytic activity |
| B | 0004601 | molecular_function | peroxidase activity |
| B | 0005506 | molecular_function | iron ion binding |
| B | 0006084 | biological_process | acetyl-CoA metabolic process |
| B | 0015948 | biological_process | methanogenesis |
| B | 0016151 | molecular_function | nickel cation binding |
| B | 0016491 | molecular_function | oxidoreductase activity |
| B | 0019385 | biological_process | methanogenesis, from acetate |
| B | 0042542 | biological_process | response to hydrogen peroxide |
| B | 0043885 | molecular_function | anaerobic carbon-monoxide dehydrogenase activity |
| B | 0046872 | molecular_function | metal ion binding |
| B | 0050418 | molecular_function | hydroxylamine reductase activity |
| B | 0051536 | molecular_function | iron-sulfur cluster binding |
| B | 0051539 | molecular_function | 4 iron, 4 sulfur cluster binding |
| B | 0098869 | biological_process | cellular oxidant detoxification |
| C | 0015948 | biological_process | methanogenesis |
| C | 0019385 | biological_process | methanogenesis, from acetate |
| C | 0043885 | molecular_function | anaerobic carbon-monoxide dehydrogenase activity |
| D | 0015948 | biological_process | methanogenesis |
| D | 0019385 | biological_process | methanogenesis, from acetate |
| D | 0043885 | molecular_function | anaerobic carbon-monoxide dehydrogenase activity |
| E | 0003824 | molecular_function | catalytic activity |
| E | 0005506 | molecular_function | iron ion binding |
| E | 0006084 | biological_process | acetyl-CoA metabolic process |
| E | 0015948 | biological_process | methanogenesis |
| E | 0016151 | molecular_function | nickel cation binding |
| E | 0016407 | molecular_function | acetyltransferase activity |
| E | 0016491 | molecular_function | oxidoreductase activity |
| E | 0016740 | molecular_function | transferase activity |
| E | 0016746 | molecular_function | acyltransferase activity |
| E | 0019385 | biological_process | methanogenesis, from acetate |
| E | 0043884 | molecular_function | CO-methylating acetyl-CoA synthase activity |
| E | 0043885 | molecular_function | anaerobic carbon-monoxide dehydrogenase activity |
| E | 0046872 | molecular_function | metal ion binding |
| E | 0051536 | molecular_function | iron-sulfur cluster binding |