4kjv

Crystal structure of XIAP-Bir2 with a bound spirocyclic benzoxazepinone inhibitor.

Method: X-RAY DIFFRACTION Dmax: 64.7 Å Quality: GOOD

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

E3 ubiquitin-protein ligase XIAP

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 152–236 Fragment:XIAP-Bir2 (unp residues 152-236) Mutation:C202A, C213G ZN ZINC ION × 1 1RK 6-methoxy-5-({(3S)-3-[(N-methyl-L-alanyl)amino]-4-oxo-2',3,3',4,5',6'-hexahydro-5H-spiro[1,5-benzoxazepine-2,4'-pyran]-5-yl}methyl)naphthalene-2-carboxylic acid × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7;292 K;1.5 M ammonium sulfate, 125 mM Bis-tris-propane , pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 292K Resolution 1.70 Å R-free 0.238
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 152–236 Fragment:XIAP-Bir2 (unp residues 152-236) Mutation:C202A, C213G ZN ZINC ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7;292 K;1.5 M ammonium sulfate, 125 mM Bis-tris-propane , pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 292K Resolution 1.70 Å R-free 0.238

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 143 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 2–86; UniProt 152–236 Author chain C; PDBConstruct 2–86; UniProt 152–236

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 4kjv

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id4kjv
Deposition date deposition_date2013-05-03
Structure title titleCrystal structure of XIAP-Bir2 with a bound spirocyclic benzoxazepinone inhibitor.
Keywords keywordsXIAP inhibitors, BIR2, benzoxazepinone, oncology, APOPTOSIS-APOPTOSIS INHIBITOR complex; APOPTOSIS/APOPTOSIS INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.41
Radius of gyration Rg (electron density) rg_electron17.73
Forward intensity I(0) i07089790.00
Molecular weight molecular_weight19026.0 kDa
Excluded volume excluded_volume23469 ų
Envelope volume envelope_volume27181 ų
Hydration-shell volume shell_volume13517 ų
Envelope diameter envelope_diameter62.2
Shell Rg shell_rg22.73
Envelope Rg envelope_rg18.02
Shape Rg shape_rg17.78
Total Rg total_rg18.41
Total atoms total_atoms1340
Residues n_residues159
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 dmax64.7
Rg (real space) rg_real18.49
Rg uncertainty (real space) rg_real_error0.45
I(0) (real space) i0_real7.0900e+06
I(0) uncertainty (real space) i0_real_error8.8870e+04
Rg (reciprocal space) rg_reciprocal18.48
I(0) (reciprocal space) i0_reciprocal7090000.0000
Solution quality estimate total_estimate0.7629
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary17.7
Skewness Skewness skewness0.423
Kurtosis Kurtosis kurtosis-0.440
Angular range angular_range— – 0.4300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2653000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.703; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.805; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id4kjvA00
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_id4kjvC00
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)