4J3Y: XIAP-BIR2 domain

Crystal structure of XIAP-BIR2 domain. Determined by X-ray diffraction at 1.45 Å resolution. Released 25 Sept 2013.

Method: X-ray diffraction
Resolution: 1.45 Å
Organism: Homo sapiens
Chains: 2
Atoms: 1,448
Mol. weight: 20 kDa
Ligands: ZN
Released: 25 Sept 2013

Explore 4J3Y in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

4J3Y contains 11 α-helices and 6 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 6 helices, 3 β-strands

Element	Residues	Length	Sheet
α-helix	158-161	4
α-helix	163-168	6
α-helix	169-172	4
α-helix	181-186	6
β-strand	189-191	3	1
β-strand	198-200	3	1
β-strand	206-207	2	1
α-helix	216-223	8
α-helix	228-232	5

Chain C: 5 helices, 3 β-strands

Element	Residues	Length	Sheet
α-helix	159-161	3
α-helix	163-168	6
α-helix	181-186	6
β-strand	189-191	3	2
β-strand	198-200	3	2
β-strand	206-207	2	2
α-helix	216-223	8
α-helix	228-233	6

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
E3 ubiquitin-protein ligase XIAP	A, C	protein	86	Homo sapiens	P98170 (AlphaFold model)

Sequence of entity 1 (A, C), FASTA

>4J3Y_1 E3 ubiquitin-protein ligase XIAP (chains A, C)
GTIYPRNPAMYSEEARLKSFQNWPDYAHLTPRELASAGLYYTGIGDQVQCFACGGKLKNW
EPGDRAWSEHRRHFPNCFFVLGRNLN

Ligands and cofactors

ID	Name	Formula	Copies
ZN	Zinc ion	Zn	2

Primary citation

The structure of XIAP BIR2: understanding the selectivity of the BIR domains. Lukacs, C., Belunis, C., Crowther, R. et al. Acta Crystallogr D Biol Crystallogr (2013) 69:1717-1725. DOI 10.1107/S0907444913016284 · PubMed

Other PDB entries of the same protein (UniProt P98170 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4J44 1.3 Å, Crystal structure of XIAP-BIR2 domain with AIAV bound
8W59 1.34 Å, Crystal structure of the RING domain of human XIAP treated with arsenic trioxide
4J47 1.35 Å, Crystal structure of XIAP-BIR2 domain with SVPI bound
4J46 1.42 Å, Crystal structure of XIAP-BIR2 domain with AVPI bound
4J45 1.48 Å, Crystal structure of XIAP-BIR2 domain with ATAA bound
5O6T 1.57 Å, BIRC4 RING in complex with dimeric ubiquitin variant
4KJU 1.6 Å, Crystal structure of XIAP-Bir2 with a bound benzodiazepinone inhibitor.
8W5A 1.65 Å, Crystal structure of the RING domain of human XIAP
4KJV 1.7 Å, Crystal structure of XIAP-Bir2 with a bound spirocyclic benzoxazepinone inhibitor.
3UW5 1.71 Å, Crystal structure of the BIR domain of MLIAP bound to GDC0152
8GH7 1.75 Å, 142D6 bound to BIR3-XIAP
4IC3 1.78 Å, Crystal structure of the F495L mutant XIAP RING domain

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