| Domain | Name | Category | Type |
| IPR000192 | Aminotransferase class V domain | Domain | Domain |
| IPR010240 | Cysteine desulfurase IscS | Family | Family |
| IPR015421 | Pyridoxal phosphate-dependent transferase, major domain | Family | Homologous superfamily |
| IPR015422 | Pyridoxal phosphate-dependent transferase, small domain | Family | Homologous superfamily |
| IPR015424 | Pyridoxal phosphate-dependent transferase | Family | Homologous superfamily |
| IPR016454 | Cysteine desulfurase | Family | Family |
| IPR020578 | Aminotransferase class-V, pyridoxal-phosphate binding site | Site | Binding site |