| P63280 | UBC9_MOUSE | Mus musculus (Mouse) | Ube2i Ubc9 Ubce2i Ubce9 | Detail |
| Q9NGP4 | UBC9_DICDI | Dictyostelium discoideum (Slime mold) | ubc9 DDB_G0287693 | Detail |
| A8WN14 | UFL1_CAEBR | Caenorhabditis briggsae | ufl-1 CBG00415 | Detail |
| P56130 | Y285_HELPY | Helicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori) | HP_0285 | Detail |
| Q95017 | UBC9_CAEEL | Caenorhabditis elegans | ubc-9 F29B9.6 | Detail |
| Q6DCZ9 | UBC12_XENLA | Xenopus laevis (African clawed frog) | ube2m ubc12 | Detail |
| P36051 | MCD4_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | MCD4 FSR2 SSU21 ZRG16 YKL165C YKL619 | Detail |
| Q5LUP4 | LFTR_RUEPO | Ruegeria pomeroyi (strain ATCC 700808 / DSM 15171 / DSS-3) (Silicibacter pomeroyi) | aat SPO1009 | Detail |
| P75954 | YCFS_ECOLI | Escherichia coli (strain K12) | ycfS b1113 JW5820 | Detail |
| Q6CSW8 | UBC12_KLULA | Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37) (Yeast) (Candida sphaerica) | UBC12 KLLA0C17248g | Detail |