ID 2.3.2.23 DE E2 ubiquitin-conjugating enzyme. AN ubiquitin-carrier-protein E2. AN ubiquitin-conjugating enzyme E2. CA S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + CA [E2 ubiquitin-conjugating enzyme]-L-cysteine = [E1 ubiquitin-activating CA enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L- CA cysteine. CC -!- The E2 ubiquitin-conjugating enzyme acquires the activated ubquitin CC from the E1 ubiquitin-activating enzyme (EC 6.2.1.45) and binds it CC via a transthioesterification reaction to itself. CC -!- In the human enzyme the catalytic center is located at Cys-87 where CC ubiquitin is bound via its C-terminal glycine in a thioester linkage. CC -!- Formerly EC 6.3.2.19. DR Q8LGF7, PEX4_ARATH ; I1RRW0, PEX4_GIBZE ; Q6ZWY6, U2D2B_MOUSE; DR P70711, U2D2B_RAT ; Q9VM35, U2QL1_DROME; A1L167, U2QL1_HUMAN; DR A0PJN4, U2QL1_MOUSE; Q2TA10, UB2D1_BOVIN; P51668, UB2D1_HUMAN; DR P61080, UB2D1_MOUSE; D3ZDK2, UB2D1_RAT ; Q1RMX2, UB2D2_BOVIN; DR P62837, UB2D2_HUMAN; P62838, UB2D2_MOUSE; Q06AA9, UB2D2_PIG ; DR P62839, UB2D2_RAT ; P62840, UB2D2_XENLA; Q3ZCF7, UB2D3_BOVIN; DR P61077, UB2D3_HUMAN; Q4R5N4, UB2D3_MACFA; P61079, UB2D3_MOUSE; DR Q5R4V7, UB2D3_PONAB; P61078, UB2D3_RAT ; Q9Y2X8, UB2D4_HUMAN; DR A5PKP9, UB2D4_XENLA; P51965, UB2E1_HUMAN; P52482, UB2E1_MOUSE; DR Q96LR5, UB2E2_HUMAN; Q91W82, UB2E2_MOUSE; Q2T9X7, UB2E3_BOVIN; DR Q969T4, UB2E3_HUMAN; P52483, UB2E3_MOUSE; P62253, UB2G1_HUMAN; DR Q4R5Y8, UB2G1_MACFA; P62254, UB2G1_MOUSE; P62255, UB2G1_RAT ; DR Q17QG5, UB2G2_BOVIN; P60604, UB2G2_HUMAN; P60605, UB2G2_MOUSE; DR Q5RF84, UB2G2_PONAB; Q9Y385, UB2J1_HUMAN; Q9JJZ4, UB2J1_MOUSE; DR Q2TA03, UB2J2_BOVIN; Q54LP7, UB2J2_DICDI; Q8N2K1, UB2J2_HUMAN; DR Q6P073, UB2J2_MOUSE; Q54AK6, UB2JL_DICDI; Q3MHP1, UB2L3_BOVIN; DR P68036, UB2L3_HUMAN; P68037, UB2L3_MOUSE; Q5R5I4, UB2L3_PONAB; DR A0A1B0GUS4, UB2L5_HUMAN; A5PJC4, UB2L6_BOVIN; O14933, UB2L6_HUMAN; DR Q9QZU9, UB2L6_MOUSE; Q4V8J2, UB2L6_RAT ; Q7Z7E8, UB2Q1_HUMAN; DR Q7TSS2, UB2Q1_MOUSE; Q32L27, UB2Q2_BOVIN; Q8WVN8, UB2Q2_HUMAN; DR Q8K2Z8, UB2Q2_MOUSE; Q7YQJ9, UB2Q2_RABIT; P49427, UB2R1_HUMAN; DR Q8CFI2, UB2R1_MOUSE; Q712K3, UB2R2_HUMAN; Q6ZWZ2, UB2R2_MOUSE; DR Q29503, UB2R2_RABIT; A1L3K1, UB2SA_XENLA; Q8AVU2, UB2SB_XENLA; DR Q76EZ2, UB2SC_XENLA; Q4VBH4, UB2WA_DANRE; Q1JPX4, UB2WB_DANRE; DR P35133, UBC10_ARATH; Q7K738, UBC10_DROME; P35134, UBC11_ARATH; DR O00103, UBC11_SCHPO; P52492, UBC11_YEAST; Q9C9Y7, UBC12_ARATH; DR Q42541, UBC13_ARATH; Q95XX0, UBC13_CAEEL; O13685, UBC13_SCHPO; DR P52490, UBC13_YEAST; P42747, UBC14_ARATH; Q9UTN8, UBC14_SCHPO; DR P42743, UBC15_ARATH; Q9Y818, UBC15_SCHPO; Q9FWT2, UBC16_ARATH; DR Q9P6I1, UBC16_SCHPO; O23239, UBC17_ARATH; Q9FMM0, UBC18_ARATH; DR Q21633, UBC18_CAEEL; Q9LJZ5, UBC19_ARATH; P25865, UBC1_ARATH ; DR P52478, UBC1_CAEEL ; O74196, UBC1_COLGL ; Q5UQC9, UBC1_MIMIV ; DR Q9UVR2, UBC1_PYRO7 ; O74810, UBC1_SCHPO ; P21734, UBC1_YEAST ; DR Q8L7T3, UBC20_ARATH; P52484, UBC21_CAEEL; Q9FF66, UBC22_ARATH; DR Q9ZVX1, UBC23_ARATH; Q8VY10, UBC24_ARATH; Q9LUQ5, UBC25_ARATH; DR Q93571, UBC25_CAEEL; Q8GY87, UBC26_ARATH; Q9FI61, UBC27_ARATH; DR Q94F47, UBC28_ARATH; Q9SLE4, UBC29_ARATH; P42745, UBC2_ARATH ; DR Q4WLA7, UBC2_ASPFU ; P35129, UBC2_CAEEL ; O74201, UBC2_CANAL ; DR Q6FR76, UBC2_CANGA ; P0CS17, UBC2_CRYNB ; P0CS16, UBC2_CRYNJ ; DR Q6BU36, UBC2_DEBHA ; Q553F3, UBC2_DICDI ; Q96UP5, UBC2_EMENI ; DR Q75EB8, UBC2_EREGS ; P78717, UBC2_FUSSL ; Q6CUD9, UBC2_KLULA ; DR P35130, UBC2_MEDSA ; Q5UQ57, UBC2_MIMIV ; P52493, UBC2_NEUCR ; DR P23566, UBC2_SCHPO ; Q58FS2, UBC2_TRIHA ; Q4PFA5, UBC2_USTMA ; DR P25866, UBC2_WHEAT ; Q6C093, UBC2_YARLI ; P06104, UBC2_YEAST ; DR Q9FKT3, UBC30_ARATH; Q9C8X7, UBC31_ARATH; Q9LSP7, UBC32_ARATH; DR Q9FK29, UBC33_ARATH; Q9SHI7, UBC34_ARATH; Q94A97, UBC35_ARATH; DR Q9FZ48, UBC36_ARATH; Q941B6, UBC37_ARATH; Q9C918, UBC38_ARATH; DR F4HPP7, UBC39_ARATH; P42746, UBC3_ARATH ; Q5UQ88, UBC3_MIMIV ; DR P14682, UBC3_YEAST ; P42748, UBC4_ARATH ; P43102, UBC4_CANAX ; DR Q5UQ40, UBC4_MIMIV ; P46595, UBC4_SCHPO ; P35135, UBC4_SOLLC ; DR P16577, UBC4_WHEAT ; P15731, UBC4_YEAST ; Q8S920, UBC5A_ORYSJ; DR Q8S919, UBC5B_ORYSJ; P42749, UBC5_ARATH ; P15732, UBC5_YEAST ; DR P42750, UBC6_ARATH ; Q6FQK7, UBC6_CANGA ; Q6BYG4, UBC6_DEBHA ; DR Q74Z34, UBC6_EREGS ; Q6CMG6, UBC6_KLULA ; O42646, UBC6_SCHPO ; DR P33296, UBC6_YEAST ; Q42540, UBC7_ARATH ; P34477, UBC7_CAEEL ; DR O00102, UBC7_SCHPO ; P25868, UBC7_WHEAT ; Q02159, UBC7_YEAST ; DR P52487, UBC84_DROME; P35131, UBC8_ARATH ; Q9P7R4, UBC8_SCHPO ; DR P28263, UBC8_YEAST ; Q94490, UBCB_DICDI ; P25867, UBCD1_DROME; DR P52485, UBCD2_DROME; P52486, UBCD4_DROME; P25153, UBCD6_DROME; DR Q86IZ3, UBCX_DICDI ; O60015, UBCX_PICAN ; P49428, UBCX_PICPA ; DR P29340, UBCX_YEAST ; P27949, UBC_ASFB7 ; P0C8G3, UBC_ASFK5 ; DR P25869, UBC_ASFM2 ; P0C8G4, UBC_ASFP4 ; P0C8G5, UBC_ASFWA ; DR P49459, UBE2A_HUMAN; Q9Z255, UBE2A_MOUSE; Q32P99, UBE2B_BOVIN; DR P63146, UBE2B_HUMAN; P63147, UBE2B_MOUSE; P63148, UBE2B_RABIT; DR P63149, UBE2B_RAT ; Q32PA5, UBE2C_BOVIN; Q54XS6, UBE2C_DICDI; DR Q9VTY6, UBE2C_DROME; O00762, UBE2C_HUMAN; Q4R9D1, UBE2C_MACFA; DR Q9D1C1, UBE2C_MOUSE; Q95044, UBE2C_SPISO; P56616, UBE2C_XENLA; DR Q32LN1, UBE2H_BOVIN; P62256, UBE2H_HUMAN; P62257, UBE2H_MOUSE; DR P61085, UBE2K_BOVIN; P61086, UBE2K_HUMAN; P61087, UBE2K_MOUSE; DR Q0P5K3, UBE2N_BOVIN; Q86K32, UBE2N_DICDI; P35128, UBE2N_DROME; DR P61088, UBE2N_HUMAN; Q4R4I1, UBE2N_MACFA; P61089, UBE2N_MOUSE; DR Q5R7J6, UBE2N_PONAB; Q9EQX9, UBE2N_RAT ; C1C3R6, UBE2S_AQUCT; DR Q1RML1, UBE2S_BOVIN; C3Z724, UBE2S_BRAFL; Q4V908, UBE2S_DANRE; DR Q54I43, UBE2S_DICDI; B3MQV3, UBE2S_DROAN; B3NWW9, UBE2S_DROER; DR B4JKB7, UBE2S_DROGR; Q9VX25, UBE2S_DROME; B4L7V4, UBE2S_DROMO; DR B4H9W2, UBE2S_DROPE; B5DKM4, UBE2S_DROPS; B4IF39, UBE2S_DROSE; DR B4R6G1, UBE2S_DROSI; B4MA02, UBE2S_DROVI; B4N208, UBE2S_DROWI; DR B4Q2J2, UBE2S_DROYA; Q16763, UBE2S_HUMAN; Q921J4, UBE2S_MOUSE; DR A7SE05, UBE2S_NEMVE; B5DFI8, UBE2S_RAT ; Q28F89, UBE2S_XENTR; DR Q32LD2, UBE2T_BOVIN; Q08BH7, UBE2T_DANRE; Q9NPD8, UBE2T_HUMAN; DR Q9CQ37, UBE2T_MOUSE; Q7ZY08, UBE2T_XENLA; Q5VVX9, UBE2U_HUMAN; DR Q95LM1, UBE2U_MACFA; A6H795, UBE2W_BOVIN; Q9XWF6, UBE2W_CAEEL; DR Q55EY8, UBE2W_DICDI; Q96B02, UBE2W_HUMAN; Q8VDW4, UBE2W_MOUSE; DR B5DEI4, UBE2W_RAT ; Q28FC1, UBE2W_XENTR; Q6DG60, UBE2Z_DANRE; DR Q9H832, UBE2Z_HUMAN; Q3UE37, UBE2Z_MOUSE; Q3B7D1, UBE2Z_RAT ; DR Q6PCF7, UBE2Z_XENLA; Q66KB0, UBE2Z_XENTR; Q8SSK3, Y1A1_ENCCU ; //