4kmp

Structure of XIAP-BIR3 and inhibitor

Method: X-RAY DIFFRACTION Dmax: 62.0 Å Quality: EXCELLENT

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 256–348 Fragment:BIR3 domain, UNP residues 256-348 ZN ZINC ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.8;291 K;0.1M Bis-tri pH5.8, 2M (NH4)2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 1.95 Å R-free 0.219
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 256–348 Fragment:BIR3 domain, UNP residues 256-348 ZN ZINC ION × 1 GT6 (2S,2'S)-N,N'-[(6,6'-difluoro-1H,1'H-2,2'-biindole-3,3'-diyl)bis{methanediyl[(2R,4S)-4-hydroxypyrrolidine-2,1-diyl][(2S)-1-oxobutane-1,2-diyl]}]bis[2-(methylamino)propanamide] × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.8;291 K;0.1M Bis-tri pH5.8, 2M (NH4)2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 1.95 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 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 6–98; UniProt 256–348 Author chain B; PDBConstruct 6–98; UniProt 256–348

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 4kmp

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id4kmp
Deposition date deposition_date2013-05-08
Structure title titleStructure of XIAP-BIR3 and inhibitor
Keywords keywordsapoptosis, XIAP-BIR3, LIGASE-LIGASE INHIBITOR complex; LIGASE/LIGASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier19.22
Radius of gyration Rg (electron density) rg_electron18.37
Forward intensity I(0) i010087600.00
Molecular weight molecular_weight23369.0 kDa
Excluded volume excluded_volume28986 ų
Envelope volume envelope_volume33840 ų
Hydration-shell volume shell_volume15801 ų
Envelope diameter envelope_diameter63.3
Shell Rg shell_rg23.82
Envelope Rg envelope_rg18.46
Shape Rg shape_rg18.36
Total Rg total_rg19.25
Total atoms total_atoms1646
Residues n_residues196
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 dmax62.0
Rg (real space) rg_real19.17
Rg uncertainty (real space) rg_real_error0.33
I(0) (real space) i0_real1.0090e+07
I(0) uncertainty (real space) i0_real_error1.2090e+05
Rg (reciprocal space) rg_reciprocal19.18
I(0) (reciprocal space) i0_reciprocal10090000.0000
Solution quality estimate total_estimate0.9032
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.7
Skewness Skewness skewness0.192
Kurtosis Kurtosis kurtosis-0.637
Angular range angular_range— – 0.4150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2389000.0000
Real-space data points n_real_points73
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.924; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.977; Smooth: 0.990

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd4kmpa1
Class classg — Small proteins
Fold Fold foldg.52 — Inhibitor of apoptosis (IAP) repeat
Superfamily Superfamily superfamilyg.52.1 — Inhibitor of apoptosis (IAP) repeat
Family Family familyg.52.1.1 — Inhibitor of apoptosis (IAP) repeat
Domain ID domain_idd4kmpa2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd4kmpb1
Class classg — Small proteins
Fold Fold foldg.52 — Inhibitor of apoptosis (IAP) repeat
Superfamily Superfamily superfamilyg.52.1 — Inhibitor of apoptosis (IAP) repeat
Family Family familyg.52.1.1 — Inhibitor of apoptosis (IAP) repeat
Domain ID domain_idd4kmpb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id4kmpA00
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_id4kmpB00
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)