| P42640 | YHBX_ECOLI | Escherichia coli (strain K12) | yhbX b3173 JW5534 | Detail |
| B3P2S2 | UFL1_DROER | Drosophila erecta (Fruit fly) | GG10135 | Detail |
| P50623 | UBC9_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | UBC9 YDL064W | Detail |
| P40984 | UBC9_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | hus5 ubc9 SPAC30D11.13 | Detail |
| Q28CQ4 | UBC9_XENTR | Xenopus tropicalis (Western clawed frog) (Silurana tropicalis) | ube2i ubc9 ubce9 TEgg019l14.1 TEgg096h05.1 | Detail |
| P0AA99 | YAFK_ECOLI | Escherichia coli (strain K12) | yafK b0224 JW0214 | Detail |
| Q5WC42 | YKUD_BACSK | Bacillus clausii (strain KSM-K16) | ABC3535 | Detail |
| B4GEL3 | UFL1_DROPE | Drosophila persimilis (Fruit fly) | GL22034 | Detail |
| B4KDK5 | UFL1_DROMO | Drosophila mojavensis (Fruit fly) | GI23931 | Detail |
| Q9XVK5 | UBC12_CAEEL | Caenorhabditis elegans | ubc-12 R09B3.4 | Detail |