7rn8

Crystal structure of caspase-3 with inhibitor Ac-VD(Orn)VD-CHO

Method: X-RAY DIFFRACTION Dmax: 68.2 Å Quality: EXCELLENT

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

Caspase-3 subunit p17

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 34–174 Chain B; UniProt 184–277 Chain C; UniProt 34–174 Chain D; UniProt 184–277 Not recorded Ac-VD(Orn)VD-CHO × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;293 K;16% PEG 6000, 5% glycerol, 100 mM sodium citrate pH 6.5, and 10 mM DTT Resolution 1.88 Å R-free 0.214

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 1–141; UniProt 34–174 Author chain C; PDBConstruct 1–141; UniProt 34–174 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 7rn8

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7rn8
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7rn8
Deposition date deposition_date2021-07-29
Structure title titleCrystal structure of caspase-3 with inhibitor Ac-VD(Orn)VD-CHO
Keywords keywordsHydrolase/Hydrolase Inhibitor, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.13
Radius of gyration Rg (electron density) rg_electron21.86
Forward intensity I(0) i048371400.00
Molecular weight molecular_weight54121.0 kDa
Excluded volume excluded_volume67713 ų
Envelope volume envelope_volume76108 ų
Hydration-shell volume shell_volume27971 ų
Envelope diameter envelope_diameter71.8
Shell Rg shell_rg29.61
Envelope Rg envelope_rg22.05
Shape Rg shape_rg21.86
Total Rg total_rg22.70
Total atoms total_atoms3800
Residues n_residues470
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 dmax68.2
Rg (real space) rg_real22.96
Rg uncertainty (real space) rg_real_error0.28
I(0) (real space) i0_real4.8370e+07
I(0) uncertainty (real space) i0_real_error5.3800e+05
Rg (reciprocal space) rg_reciprocal23.00
I(0) (reciprocal space) i0_reciprocal48370000.0000
Solution quality estimate total_estimate0.9132
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary30.4
Skewness Skewness skewness0.082
Kurtosis Kurtosis kurtosis-0.577
Angular range angular_range— – 0.3450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8984000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.965; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.986; Smooth: 0.986

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)