| Domain | Name | Category | Type |
| IPR000089 | Biotin/lipoyl attachment | Domain | Domain |
| IPR001078 | 2-oxoacid dehydrogenase acyltransferase, catalytic domain | Domain | Domain |
| IPR003016 | 2-oxo acid dehydrogenase, lipoyl-binding site | Site | Binding site |
| IPR004167 | Peripheral subunit-binding domain | Domain | Domain |
| IPR011053 | Single hybrid motif | Family | Homologous superfamily |
| IPR023213 | Chloramphenicol acetyltransferase-like domain superfamily | Family | Homologous superfamily |
| IPR036625 | E3-binding domain superfamily | Family | Homologous superfamily |