CATH Classification
Level | CATH Code | Description |
---|---|---|
1 | Mainly Alpha | |
1.10 | Orthogonal Bundle | |
1.10.1170 | Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A | |
1.10.1170.10 | Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A |
Domain Context
CATH Clusters
Superfamily | Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A |
Functional Family | Baculoviral IAP repeat-containing protein 2 |
Enzyme Information
2.3.2.27 |
RING-type E3 ubiquitin transferase.
based on mapping to UniProt Q13490
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)- ubiquitinyl-[acceptor protein]-L-lysine.
-!- RING E3 ubiquitin transferases serve as mediators bringing the ubiquitin-charged E2 ubiquitin-conjugating enzyme (EC 2.3.2.23) and an acceptor protein together to enable the direct transfer of ubiquitin through the formation of an isopeptide bond between the C-terminal glycine residue of ubiquitin and the epsilon-amino group of an L-lysine residue of the acceptor protein. -!- Unlike EC 2.3.2.26 the RING-E3 domain does not form a catalytic thioester intermediate with ubiquitin. -!- Many members of the RING-type E3 ubiquitin transferase family are not able to bind a substrate directly, and form a complex with a cullin scaffold protein and a substrate recognition module (the complexes are named CRL for Cullin-RING-Ligase). -!- In these complexes, the RING-type E3 ubiquitin transferase provides an additional function, mediating the transfer of a NEDD8 protein from a dedicated E2 carrier to the cullin protein (see EC 2.3.2.32). -!- Cf. EC 2.3.2.31.
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UniProtKB Entries (1)
Q13490 |
BIRC2_HUMAN
Homo sapiens
Baculoviral IAP repeat-containing protein 2
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PDB Structure
PDB | 3T6P |
External Links | |
Method | X-RAY DIFFRACTION |
Organism | |
Primary Citation |
Antagonists induce a conformational change in cIAP1 that promotes autoubiquitination.
Science
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