| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species | 
| Q9LUQ5 | Probable ubiquitin-conjugating enzyme E2 25; EC 6.3.2.19; Ubiquitin carrier protein 25; | UBC25; At3g15355; | NP_188154.1; | 609 | arabidopsis | 
| Q8GY87 | Probable ubiquitin-conjugating enzyme E2 26; EC 6.3.2.19; Ubiquitin carrier protein 26; | UBC26; At1g53025; | NP_001185207.1; | 543 | arabidopsis | 
| Q9FI61 | Ubiquitin-conjugating enzyme E2 27; EC 6.3.2.19; Ubiquitin carrier protein 27; | UBC27; UBC1; At5g50870; | NP_199900.1; | 192 | arabidopsis | 
| Q94F47 | Ubiquitin-conjugating enzyme E2 28; EC 6.3.2.19; Ubiquitin carrier protein 28; | UBC28; UBC9A; At1g64230; | NP_001031228.1;NP_564828.1; | 148 | arabidopsis | 
| Q9SLE4 | Ubiquitin-conjugating enzyme E2 29; EC 6.3.2.19; Ubiquitin carrier protein 29; | UBC29; At2g16740; | NP_565391.1; | 148 | arabidopsis | 
| P42745 | Ubiquitin-conjugating enzyme E2 2; EC 6.3.2.19; Ubiquitin carrier protein 2; Ubiquitin-conjugating enzyme E2-17 kDa 2; Ubiquitin-protein ligase 2; | UBC2; At2g02760; | NP_565289.1; | 152 | arabidopsis | 
| Q9FKT3 | Ubiquitin-conjugating enzyme E2 30; EC 6.3.2.19; Ubiquitin carrier protein 30; | UBC30; At5g56150; | NP_568835.1;NP_851198.1; | 148 | arabidopsis | 
| Q9C8X7 | Probable ubiquitin-conjugating enzyme E2 31; EC 6.3.2.19; Ubiquitin carrier protein 31; | UBC31; At1g36340; | NP_564472.1; | 154 | arabidopsis | 
| Q9LSP7 | Ubiquitin-conjugating enzyme E2 32; EC 6.3.2.19; Ubiquitin carrier protein 32; | UBC32; At3g17000; | NP_566563.1; | 309 | arabidopsis | 
| Q9FK29 | Probable ubiquitin-conjugating enzyme E2 33; EC 6.3.2.19; Ubiquitin carrier protein 33; | UBC33; At5g50430; | NP_001032048.2;NP_001032049.1;NP_199854.1; | 243 | arabidopsis | 
| Q9SHI7 | Ubiquitin-conjugating enzyme E2 34; EC 6.3.2.19; Ubiquitin carrier protein 34; | UBC34; At1g17280; | NP_001077554.1;NP_173172.1; | 237 | arabidopsis | 
| Q94A97 | Ubiquitin-conjugating enzyme E2 35; EC 6.3.2.19; Ubiquitin carrier protein 35; | UBC35; UBC13A UBG13A; At1g78870; | NP_001031298.1;NP_565192.1;NP_849902.2; | 153 | arabidopsis | 
| Q9FZ48 | Ubiquitin-conjugating enzyme E2 36; EC 6.3.2.19; Ubiquitin carrier protein 36; | UBC36; UBC13B UBG13B; At1g16890; | NP_564011.1;NP_849678.1; | 153 | arabidopsis | 
| Q941B6 | Probable ubiquitin-conjugating enzyme E2 37; EC 6.3.2.19; Ubiquitin carrier protein 37; | UBC37; At3g24515; | NP_566751.1; | 409 | arabidopsis | 
| Q9C918 | Putative ubiquitin-conjugating enzyme E2 38; EC 6.3.2.19; Ubiquitin carrier protein 38; | UBC38; At1g53020; | NULL | 326 | arabidopsis | 
| F4HPP7 | Putative ubiquitin-conjugating enzyme E2 39; EC 6.3.2.19; Ubiquitin carrier protein 39; | UBC39; At1g53023; | NP_001185206.1; | 316 | arabidopsis | 
| P42746 | Ubiquitin-conjugating enzyme E2 3; EC 6.3.2.19; Ubiquitin carrier protein 3; Ubiquitin-conjugating enzyme E2-17 kDa 3; Ubiquitin-protein ligase 3; | UBC3; At5g62540; | NP_568956.1; | 150 | arabidopsis | 
| P42748 | Ubiquitin-conjugating enzyme E2 4; EC 6.3.2.19; Ubiquitin carrier protein 4; Ubiquitin-conjugating enzyme E2-21 kDa 1; Ubiquitin-protein ligase 4; | UBC4; At5g41340; | NP_568589.1; | 187 | arabidopsis | 
| P42749 | Ubiquitin-conjugating enzyme E2 5; EC 6.3.2.19; Ubiquitin carrier protein 5; Ubiquitin-conjugating enzyme E2-21 kDa 2; Ubiquitin-protein ligase 5; | UBC5; At1g63800; | NP_564817.2; | 185 | arabidopsis | 
| P42750 | Ubiquitin-conjugating enzyme E2 6; EC 6.3.2.19; Ubiquitin carrier protein 6; Ubiquitin-conjugating enzyme E2-21 kDa 3; Ubiquitin-protein ligase 6; | UBC6; At2g46030; | NP_566062.1; | 183 | arabidopsis | 
