4ec4

X-ray diffraction
3.3Å resolution

XIAP-BIR3 in complex with a potent divalent Smac mimetic

Released:

Function and Biology Details

Reaction catalysed:
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
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domain:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
E3 ubiquitin-protein ligase XIAP Chains: A, B, C, D, E, F, G, J, K, L
Molecule details ›
Chains: A, B, C, D, E, F, G, J, K, L
Length: 122 amino acids
Theoretical weight: 14.12 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P98170 (Residues: 241-356; Coverage: 23%)
Gene names: API3, BIRC4, IAP3, XIAP
Sequence domains: Inhibitor of Apoptosis domain
Structure domains: Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A

Ligands and Environments


No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-1
Spacegroup: P212121
Unit cell:
a: 65.42Å b: 130.49Å c: 215.73Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.213 0.21 0.276
Expression system: Escherichia coli