| Arginine rich region | Glutamine rich region | Proline rich region | Breaking-point |
| Cpsf1-3 interaction | Cpsf4 interaction | Papola interaction | Papola activity region |
If you pass the mouse over each link, the image will change and will show you each domain of the FIP1L1 domain. If you click on the link you will have a brief view about the domain. If you observe the Blast image you can see that this gene has only one main domain (FIP). This page shows the whole important regions of the gene and we have to say that the FIP domain is composed by CPSF regions and PAPOLA regions. It is logical that FIP1L1 has these domains because of his interaction with CPSF complex as you will see in the Functional study.