Table 3. Statistics of InterPro functional annotations in 173 splicing factors.
| InterPro ID | Description | Number of splicing factors |
| IPR012677 | Nucleotide-bd a/b plait | 46 |
| IPR000504 | RRM domain | 45 |
| IPR010920 | LSM-related domain | 11 |
| IPR001163 | LSM domain | 11 |
| IPR006649 | LSM domain euk/arc | 10 |
| IPR015943 | WD40/YVTN repeat-like domain | 10 |
| IPR001680 | WD40 repeat | 9 |
| IPR011046 | WD40 repeat-like domain | 9 |
| IPR019782 | WD40 repeat 2 | 9 |
| IPR017986 | WD40 repeat domain | 9 |
| IPR019781 | WD40 repeat sg | 9 |
| IPR015880 | Znf C2H2-like | 7 |
| IPR019775 | WD40 repeat CS | 7 |
| IPR020472 | G-protein beta WD-40 repeat | 6 |
| IPR013083 | Xnf RING/FYVE/PHD | 6 |
InterPro classifies sequences at superfamily, family and subfamily levels and annotates the occurrence of functional domains, repeats and important sites. The annotations which occur in more than five splicing factors are presented with the information of InterPro ID, description, and number of splicing factors.