Family Build (I value*) | Family ID | Annotation** | # Members |
| 1.2 | 3298 | TFIID-18 | 5 |
| 2 | 26240 | TFIID-18 | 5 |
| 5 | 60209 | TFIID-18 | 5 |
| 1.1 | 104121 | Transcription initiation factor IID 18 kDa subunit - Molecular Function: RNA polymerase II transcription factor activity (GO:0003702) - Cellular Component: transcription factor complex (GO:0005667) - Biological Process: transcription initiation (GO:0006352) Histone-fold | 4 |
| 2 | 122919 | Histone-fold Transcription initiation factor IID 18 kDa subunit - Molecular Function: RNA polymerase II transcription factor activity (GO:0003702) - Cellular Component: transcription factor complex (GO:0005667) - Biological Process: transcription initiation (GO:0006352) | 4 |
| 5 | 133116 | Histone-fold Transcription initiation factor IID 18 kDa subunit - Molecular Function: RNA polymerase II transcription factor activity (GO:0003702) - Cellular Component: transcription factor complex (GO:0005667) - Biological Process: transcription initiation (GO:0006352) | 4 |
*i value: controls inflation, a process to dissipate family clusters. At high i value, genes tend to be separated into different families.
**Annotation: the most common InterPro annotation(s) of the Arabidopsis members in the family.