EC Number   |
Substrates   |
Products   |
Reversibility   |
|---|
 2.3.2.23 | S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine |
backside interaction was of Ub non-covalently bound to Ube2D3 via the hydrophobic patch centered on I44, a Ub surface used in many different protein-protein interactions. Although weak in affinity, the interaction promotes an increase in processivity of polyUb chain building by Ube2D3 |
[E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine |
- |
? |
 2.3.2.23 | S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine |
acceptor ubiquitin residue Arg54 participates in Ube2R1-catalyzed Lys48 polyubiquitin chain formation. Significance of the Asp143 Ube2R1/2-Arg54 acceptor ubiquitin ion pair |
[E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine |
- |
? |
 2.3.2.23 | S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine |
acceptor ubiquitin residue Arg54 participated in Ube2R1-catalyzed Lys 48 polyubiquitin chain formation. Significance of the Asp143 Ube2R1/2-Arg54 acceptor ubiquitin ion pair |
[E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine |
- |
? |
 2.3.2.23 | S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine |
the E2 ubiquitin-conjugating enzyme acquires the activated ubquitin from the E1 ubiquitin-activating enzyme |
[E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine |
- |
? |
 2.3.2.23 | S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [UBE2S]-L-cysteine |
- |
[E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[UBE2S]-L-cysteine |
- |
? |
 2.3.2.23 | S-ubiquitinyl-[Uba1]-L-cysteine + [Ubc5a]-L-cysteine |
- |
[Uba1]-L-cysteine + S-ubiquitinyl-[Ubc5a]-L-cysteine |
the E1 enzyme Uba1, the E2 enzyme UbcH5a, and the E3 enzyme TRIP12 are responsible for ubiquitylation of ubiquitin mutant G76V |
? |
 2.3.2.23 | [UBE2W]-S-ubiquitinyl-L-cysteine + [Josephin domain of ATXN3]-L-lysine |
- |
[UBE2W]-L-cysteine + [Josephin domain of ATXN3]-N6-ubiquitinyl-L-lysine |
- |
? |
 2.3.2.23 | [ubiquitin-activating protein E1]-S-ubiquitinyl-L-cysteine + [ubiquitin carrier protein Ubc4]-L-cysteine |
binding of Ubc4 to the E1ubiquitin covalent intermediate leads to productive catalysis of ubiquitin transfer to Ubc4 in the form of a thioester linkage. No significant ubiquitination of Ubc4 through formation of lysyl isopeptide bonds is observed |
[ubiquitin-activating protein E1]-L-cysteine + [ubiquitin carrier protein Ubc4]-S-ubiquitinyl-L-cysteine |
- |
? |
 2.3.2.23 | [ubiquitin-activating protein E1]-S-ubiquitinyl-L-cysteine + [ubiquitin carrier protein UbcH7]-L-cysteine |
- |
[ubiquitin-activating protein E1]-L-cysteine + [ubiquitin carrier protein UbcH7]-S-ubiquitinyl-L-cysteine |
- |
? |
 2.3.2.23 | [ubiquitin-activating protein E1]-S-ubiquitinyl-L-cysteine + [ubiquitin-carrier-protein Ube2r]-L-cysteine |
- |
[ubiquitin-activating protein E1]-L-cysteine + [ubiquitin-carrier-protein Ube2r]-S-ubiquitinyl-L-cysteine |
enzyme is capable of forming a thiolester bond with ubiquitin |
? |