| Q9ZVX1 | UBC23_ARATH | Arabidopsis thaliana (Mouse-ear cress) | UBC23 At2g16920 F12A24.10 | Detail |
| P75954 | YCFS_ECOLI | Escherichia coli (strain K12) | ycfS b1113 JW5820 | Detail |
| Q75EB8 | UBC2_ASHGO | Ashbya gossypii (strain ATCC 10895 / CBS 109.51 / FGSC 9923 / NRRL Y-1056) (Yeast) (Eremothecium gossypii) | UBC2 AAR156C | Detail |
| Q712K3 | UB2R2_HUMAN | Homo sapiens (Human) | UBE2R2 CDC34B UBC3B | Detail |
| P42748 | UBC4_ARATH | Arabidopsis thaliana (Mouse-ear cress) | UBC4 At5g41340 MYC6.5 | Detail |
| Q8S919 | UBC5B_ORYSJ | Oryza sativa subsp. japonica (Rice) | UBC5B Os02g0261100 LOC_Os02g16040 OsJ_06152 OSJNBb0026F09.5 | Detail |
| P28263 | UBC8_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | UBC8 GID3 YEL012W | 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 |
| Q9UTN8 | UBC14_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | ubc14 SPAC1250.03 | Detail |
| Q9Y385 | UB2J1_HUMAN | Homo sapiens (Human) | UBE2J1 NCUBE1 CGI-76 HSPC153 HSPC205 | Detail |