| Process ID | Gene number | Process name |
| GO:0008204 | 0 | The chemical reactions and pathways involving ergosterol, (22E)-ergosta-5,7,22-trien-3-beta-ol, a sterol found in ergot, yeast and moulds. It is the most important of the D provitamins and is converted to vitamin D2 on irradiation with UV light. |
| GO:0016129 | 0 | The chemical reactions and pathways resulting in the formation of phytosteroids, steroids of higher plants differing from animal steroids in having substitutions at C24 and/or a double bond at C22. |
| GO:0016130 | 0 | The chemical reactions and pathways resulting in the breakdown of phytosteroids, steroids of higher plants differing from animal steroids C1 or C2 residues at C24 and/or a double bond at C22. |
| GO:0016131 | 6 | The chemical reactions and pathways involving brassinosteroids, any of a group of steroid derivatives that occur at very low concentrations in plant tissues and may have hormone-like effects. |
| GO:0016134 | 0 | The chemical reactions and pathways involving saponins, glycosides of plants in which the aglycan (sapogenin) moiety is a terpene or steroid and the sugar moiety is a glucose, a galactose, a pentose, a methylpentose or an oligosaccharide. Saponins are powerful surfactant agents and membrane active; they are, hence, toxic to animals on injection. |
