1cp3

CRYSTAL STRUCTURE OF THE COMPLEX OF APOPAIN WITH THE TETRAPEPTIDE INHIBITOR ACE-DVAD-FMC

Method: X-RAY DIFFRACTION Dmax: 71.0 Å Quality: EXCELLENT

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

APOPAIN

Homo sapiens

UniProt P42574

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 heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 1–277 Chain B; UniProt 1–277 Not recorded ACETYL-ASP-VAL-ALA-ASP-FLUOROMETHYLKETONE × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.4;277 K;HANGING DROP, RESERVOIR: 5% PEG8000, 0.05 M MAGNESIUM ACETATE, 0.09 M SODIUM CACODYLATE, 0.08 M SODIUM SULFATE, PH 6.4, 4 DEG. CELSIUS, vapor diffusion - hanging drop, temperature 277K Resolution 2.30 Å R-free 0.284

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.

134 other PDB entries and 196 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name ICE3_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–277; UniProt 1–277 Author chain B; PDBConstruct 1–277; UniProt 1–277

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 1cp3

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1cp3
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1cp3
Deposition date deposition_date1996-12-12
Structure title titleCRYSTAL STRUCTURE OF THE COMPLEX OF APOPAIN WITH THE TETRAPEPTIDE INHIBITOR ACE-DVAD-FMC
Keywords keywordsHYDROLASE-HYDROLASE INHIBITOR COMPLEX, APOPTOSIS, interleukin-1beta-converting enzyme, CYSTEINE-PROTEASE; HYDROLASE/HYDROLASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.24
Radius of gyration Rg (electron density) rg_electron21.99
Forward intensity I(0) i049165600.00
Molecular weight molecular_weight54514.0 kDa
Excluded volume excluded_volume68102 ų
Envelope volume envelope_volume76555 ų
Hydration-shell volume shell_volume28048 ų
Envelope diameter envelope_diameter72.4
Shell Rg shell_rg29.66
Envelope Rg envelope_rg22.12
Shape Rg shape_rg22.00
Total Rg total_rg22.80
Total atoms total_atoms3828
Residues n_residues472
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 dmax71.0
Rg (real space) rg_real23.07
Rg uncertainty (real space) rg_real_error0.46
I(0) (real space) i0_real4.9170e+07
I(0) uncertainty (real space) i0_real_error6.9830e+05
Rg (reciprocal space) rg_reciprocal23.11
I(0) (reciprocal space) i0_reciprocal49170000.0000
Solution quality estimate total_estimate0.9059
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary30.6
Skewness Skewness skewness0.074
Kurtosis Kurtosis kurtosis-0.577
Angular range angular_range— – 0.3400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8211000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.932; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.986; Smooth: 0.992

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1cp3a_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.17 — Caspase-like
Superfamily Superfamily superfamilyc.17.1 — Caspase-like
Family Family familyc.17.1.1 — Caspase catalytic domain
Domain ID domain_idd1cp3b_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.17 — Caspase-like
Superfamily Superfamily superfamilyc.17.1 — Caspase-like
Family Family familyc.17.1.1 — Caspase catalytic domain

CATH v4.4 (2 domains)

Domain ID domain_id1cp3A00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1460
Domain ID domain_id1cp3B00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1460

8. Citations (1)

9. Files and Curves (10)