9n21

Crystal structure of XIAP-BIR3 with ALP1 series SMAC mimetic ligand

Method: X-RAY DIFFRACTION Dmax: 47.2 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 246–354 Not recorded ZN ZINC ION × 1 A1BVB N~2~-methyl-N-{6-[(1,3-thiazol-5-yl)ethynyl]pyridin-2-yl}-L-alaninamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8;293 K;0.05-0.2 M HEPES, pH 8.0, 3.0-3.4 M sodium chloride Resolution 2.74 Å R-free 0.219

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 144 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 2–110; UniProt 246–354

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 9n21

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9n21
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9n21
Deposition date deposition_date2025-01-27
Structure title titleCrystal structure of XIAP-BIR3 with ALP1 series SMAC mimetic ligand
Keywords keywordsUbiquitin E3 ligase, Inhibitor of Apoptosis Protein, Cell death, SMAC mimetic., SIGNALING PROTEIN; SIGNALING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier14.11
Radius of gyration Rg (electron density) rg_electron13.16
Forward intensity I(0) i05434450.00
Molecular weight molecular_weight11435.0 kDa
Excluded volume excluded_volume11119 ų
Envelope volume envelope_volume16646 ų
Hydration-shell volume shell_volume10873 ų
Envelope diameter envelope_diameter46.9
Shell Rg shell_rg18.75
Envelope Rg envelope_rg13.63
Shape Rg shape_rg13.12
Total Rg total_rg14.14
Total atoms total_atoms874
Residues n_residues103
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 dmax47.2
Rg (real space) rg_real14.04
Rg uncertainty (real space) rg_real_error0.33
I(0) (real space) i0_real5.4340e+06
I(0) uncertainty (real space) i0_real_error6.0320e+04
Rg (reciprocal space) rg_reciprocal14.05
I(0) (reciprocal space) i0_reciprocal5434000.0000
Solution quality estimate total_estimate0.8782
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary17.3
Skewness Skewness skewness0.227
Kurtosis Kurtosis kurtosis-0.323
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1044000.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.817; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.995; Smooth: 0.968

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)