| Q3MHP1 | UB2L3_BOVIN | Bos taurus (Bovine) | UBE2L3 | Detail |
| Q9EQX9 | UBE2N_RAT | Rattus norvegicus (Rat) | Ube2n | Detail |
| Q12185 | YD018_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | YDR018C PZF396 YD9335.04C | Detail |
| Q4R367 | UFL1_MACFA | Macaca fascicularis (Crab-eating macaque) (Cynomolgus monkey) | UFL1 MAXER QtsA-19276 RCAD | Detail |
| P52484 | UBC21_CAEEL | Caenorhabditis elegans | ubc-21 C06E2.3 | Detail |
| B4IF39 | UBE2S_DROSE | Drosophila sechellia (Fruit fly) | GM13299 | Detail |
| Q28FC1 | UBE2W_XENTR | Xenopus tropicalis (Western clawed frog) (Silurana tropicalis) | ube2w TEgg096e02.1 | Detail |
| P62837 | UB2D2_HUMAN | Homo sapiens (Human) | UBE2D2 PUBC1 UBC4 UBC5B UBCH4 UBCH5B | Detail |
| Q9ZU75 | UB12L_ARATH | Arabidopsis thaliana (Mouse-ear cress) | RCE2 At2g18600 F24H14.5 | Detail |
| Q3UWQ3 | UB2FB_MOUSE | Mus musculus (Mouse) | Ube2fb Gm5434 | Detail |