| GO | Name |
| GO:0005739 | mitochondrion |
| GO:0005758 | mitochondrial intermembrane space |
| GO:0005759 | mitochondrial matrix |
| GO:0006790 | sulfur compound metabolic process |
| GO:0008482 | sulfite oxidase activity |
| GO:0020037 | heme binding |
| GO:0030151 | molybdenum ion binding |
| GO:0043546 | molybdopterin cofactor binding |
| GO:0070221 | sulfide oxidation, using sulfide:quinone oxidoreductase |