| Gene | Description | Domains |
|---|---|---|
| Aque_Aqu2.1.26957_001 | Ubiquitin conjugation factor E4 A | U-box, Ufd2P_core |
| Aque_Aqu2.1.36259_001 | Ubiquitin conjugation factor E4 B | U-box, Ufd2P_core |
| Aque_Aqu2.1.37145_001 | cDNA FLJ13786 fis, clone PLACE4000654, highly similar to Mus musculus ubiquitin conjugating enzyme | Ufd2P_core, UQ_con |