4ec4

XIAP-BIR3 in complex with a potent divalent Smac mimetic

Method: X-RAY DIFFRACTION Dmax: 134.6 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

Baculoviral IAP repeat-containing protein 4

Homo sapiens

UniProt P98170

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 241–356 Chain F; UniProt 241–356 Fragment:BIR3 domain (UNP residues 241-356) ZN ZINC ION × 2 0O6 (3S,6S,7S,9aS,3'S,6'S,7'S,9a'S)-N,N'-(benzene-1,4-diylbis{butane-4,1-diyl-1H-1,2,3-triazole-1,4-diyl[(S)-phenylmethanediyl]})bis[7-(hydroxymethyl)-6-{[(2S)-2-(methylamino)butanoyl]amino}-5-oxooctahydro-1H-pyrrolo[1,2-a]azepine-3-carboxamide] × 1 P33 3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;30% PEG400, 0.2 M sodium citrate, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 3.30 Å R-free 0.276
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 241–356 Chain G; UniProt 241–356 Fragment:BIR3 domain (UNP residues 241-356) ZN ZINC ION × 2 0O6 (3S,6S,7S,9aS,3'S,6'S,7'S,9a'S)-N,N'-(benzene-1,4-diylbis{butane-4,1-diyl-1H-1,2,3-triazole-1,4-diyl[(S)-phenylmethanediyl]})bis[7-(hydroxymethyl)-6-{[(2S)-2-(methylamino)butanoyl]amino}-5-oxooctahydro-1H-pyrrolo[1,2-a]azepine-3-carboxamide] × 1 2PE NONAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;30% PEG400, 0.2 M sodium citrate, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 3.30 Å R-free 0.276
3 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 241–356 Chain J; UniProt 241–356 Fragment:BIR3 domain (UNP residues 241-356) ZN ZINC ION × 2 0O6 (3S,6S,7S,9aS,3'S,6'S,7'S,9a'S)-N,N'-(benzene-1,4-diylbis{butane-4,1-diyl-1H-1,2,3-triazole-1,4-diyl[(S)-phenylmethanediyl]})bis[7-(hydroxymethyl)-6-{[(2S)-2-(methylamino)butanoyl]amino}-5-oxooctahydro-1H-pyrrolo[1,2-a]azepine-3-carboxamide] × 1 P33 3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;30% PEG400, 0.2 M sodium citrate, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 3.30 Å R-free 0.276
4 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 241–356 Chain K; UniProt 241–356 Fragment:BIR3 domain (UNP residues 241-356) ZN ZINC ION × 2 0O6 (3S,6S,7S,9aS,3'S,6'S,7'S,9a'S)-N,N'-(benzene-1,4-diylbis{butane-4,1-diyl-1H-1,2,3-triazole-1,4-diyl[(S)-phenylmethanediyl]})bis[7-(hydroxymethyl)-6-{[(2S)-2-(methylamino)butanoyl]amino}-5-oxooctahydro-1H-pyrrolo[1,2-a]azepine-3-carboxamide] × 1 P33 3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;30% PEG400, 0.2 M sodium citrate, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 3.30 Å R-free 0.276
5 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain E; UniProt 241–356 Chain L; UniProt 241–356 Fragment:BIR3 domain (UNP residues 241-356) ZN ZINC ION × 2 0O6 (3S,6S,7S,9aS,3'S,6'S,7'S,9a'S)-N,N'-(benzene-1,4-diylbis{butane-4,1-diyl-1H-1,2,3-triazole-1,4-diyl[(S)-phenylmethanediyl]})bis[7-(hydroxymethyl)-6-{[(2S)-2-(methylamino)butanoyl]amino}-5-oxooctahydro-1H-pyrrolo[1,2-a]azepine-3-carboxamide] × 1 2PE NONAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;293 K;30% PEG400, 0.2 M sodium citrate, 0.1 M Tris, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 3.30 Å R-free 0.276

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

73 other PDB entries and 140 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name XIAP_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–116; UniProt 241–356 Author chain B; PDBConstruct 1–116; UniProt 241–356 Author chain C; PDBConstruct 1–116; UniProt 241–356 Author chain D; PDBConstruct 1–116; UniProt 241–356 Author chain E; PDBConstruct 1–116; UniProt 241–356 Author chain F; PDBConstruct 1–116; UniProt 241–356 Author chain G; PDBConstruct 1–116; UniProt 241–356 Author chain J; PDBConstruct 1–116; UniProt 241–356 Author chain K; PDBConstruct 1–116; UniProt 241–356 Author chain L; PDBConstruct 1–116; UniProt 241–356

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 4ec4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4ec4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4ec4
Deposition date deposition_date2012-03-26
Structure title titleXIAP-BIR3 in complex with a potent divalent Smac mimetic
Keywords keywordszinc finger, APOPTOSIS INHIBITOR; APOPTOSIS INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier42.12
Radius of gyration Rg (electron density) rg_electron42.07
Forward intensity I(0) i0496040000.00
Molecular weight molecular_weight122530.0 kDa
Excluded volume excluded_volume119010 ų
Envelope volume envelope_volume232600 ų
Hydration-shell volume shell_volume47663 ų
Envelope diameter envelope_diameter141.5
Shell Rg shell_rg45.68
Envelope Rg envelope_rg40.56
Shape Rg shape_rg42.09
Total Rg total_rg42.17
Total atoms total_atoms9253
Residues n_residues1067
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax134.6
Rg (real space) rg_real42.11
Rg uncertainty (real space) rg_real_error1.19
I(0) (real space) i0_real4.9600e+08
I(0) uncertainty (real space) i0_real_error8.9240e+06
Rg (reciprocal space) rg_reciprocal42.12
I(0) (reciprocal space) i0_reciprocal496000000.0000
Solution quality estimate total_estimate0.9028
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary50.9
Skewness Skewness skewness0.181
Kurtosis Kurtosis kurtosis-0.698
Angular range angular_range— – 0.1850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8302000.0000
Real-space data points n_real_points38
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.954; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.989; Smooth: 0.881

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 10 domains

CATH v4.4 (10 domains)

Domain ID domain_id4ec4A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4B00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4C00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4D00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4E00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4F00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4G00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4J00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4K00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id4ec4L00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A

8. Citations (1)

9. Files and Curves (10)