2h5j

Crystal strusture of caspase-3 with inhibitor Ac-DMQD-Cho

Method: X-RAY DIFFRACTION Dmax: 69.2 Å Quality: EXCELLENT

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

caspase-3, p17 subunit

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 29–174 Chain B; UniProt 184–277 Chain C; UniProt 29–174 Chain D; UniProt 184–277 Fragment:residues 29-174 Fragment:residues 184-277 Ac-DMQD-Cho × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 6.5;298 K;100 mM sodium citrate, 5% glycerol, 10 mM dithiothreitol and 14-18% PEG 6000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.00 Å R-free 0.269

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 CASP3_HUMAN
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 1–146; UniProt 29–174 Author chain C; PDBConstruct 1–146; UniProt 29–174 Author chain B; PDBConstruct 1–94; UniProt 184–277 Author chain D; PDBConstruct 1–94; UniProt 184–277

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 2h5j

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2h5j
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2h5j
Deposition date deposition_date2006-05-26
Structure title titleCrystal strusture of caspase-3 with inhibitor Ac-DMQD-Cho
Keywords keywordsENZYME CATALYSIS, CYSTEINE PROTEASE, APOPTOSIS, INDUCED FIT, HYDROLASE-HYDROLASE INHIBITOR COMPLEX; HYDROLASE/HYDROLASE INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.25
Radius of gyration Rg (electron density) rg_electron21.95
Forward intensity I(0) i051000800.00
Molecular weight molecular_weight55225.0 kDa
Excluded volume excluded_volume68900 ų
Envelope volume envelope_volume76879 ų
Hydration-shell volume shell_volume28152 ų
Envelope diameter envelope_diameter72.4
Shell Rg shell_rg29.73
Envelope Rg envelope_rg22.09
Shape Rg shape_rg21.95
Total Rg total_rg22.79
Total atoms total_atoms3874
Residues n_residues475
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 dmax69.2
Rg (real space) rg_real23.07
Rg uncertainty (real space) rg_real_error0.37
I(0) (real space) i0_real5.1000e+07
I(0) uncertainty (real space) i0_real_error6.8720e+05
Rg (reciprocal space) rg_reciprocal23.12
I(0) (reciprocal space) i0_reciprocal51000000.0000
Solution quality estimate total_estimate0.9112
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary30.9
Skewness Skewness skewness0.060
Kurtosis Kurtosis kurtosis-0.595
Angular range angular_range— – 0.3400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8036000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.955; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.983; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id2h5jA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1460
Domain ID domain_id2h5jB00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily1470 — Caspase-like
Domain ID domain_id2h5jC00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1460
Domain ID domain_id2h5jD00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily1470 — Caspase-like

8. Citations (1)

9. Files and Curves (10)