2.3.2.B8: E2:E3 ubiquitin transferase
This is an abbreviated version!
For detailed information about E2:E3 ubiquitin transferase, go to the full flat file.
Reaction
Synonyms
E2-E3 ligase, E3 HECT, E3 ubiquitin-protein ligase, E3 ubiquitin-protein ligase Itchy homolog, Itch, UbcH5, UbcH5B-ubiquitin-HECT NEDD4L complex, UbcH6, UbcM3, UBE2D1, UBE2E1
ECTree
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Reaction
Reaction on EC 2.3.2.B8 - E2:E3 ubiquitin transferase
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S-ubiquitinyl-[ubiquitin-carrier protein E2]-L-cysteine + [HECT-E3-ubiquitin-carrier protein]-L-cysteine = [ubiquitin-carrier protein E2]-L-cysteine + S-ubiquitinyl-[HECT-E3-ubiquitin-carrier protein]-L-cysteine
S-ubiquitinyl-[ubiquitin-carrier protein E2]-L-cysteine + [HECT-E3-ubiquitin-carrier protein]-L-cysteine = [ubiquitin-carrier protein E2]-L-cysteine + S-ubiquitinyl-[HECT-E3-ubiquitin-carrier protein]-L-cysteine
the 40 kDa C-terminal HET domain binds a reactive thioester-linked E2-ubiquitin covalent-linked complex. The ubiqiutin is transferred from the E2 catalytic cysteine to the HECT domain catalytic cysteine via a transthiolation reaction