4ehf

Allosteric Modulation of Caspase-3 through Mutagenesis

Method: X-RAY DIFFRACTION Dmax: 72.2 Å Quality: REASONABLE

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

Caspase-3

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–277 Mutation:Y197C,V266H ACE-ASP-GLU-VAL-ASP-CHLOROMETHYLKETONE INHIBITOR × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;291 K;Protein solution: 8 mg/ml protein in 10 mM Tris-HCl, pH 8.5, 10 mM DTT, and 3 mM NaN3. Reservoir solution: 100 mM sodium citrate, pH 5.0, 3 mM NaN3, 10 mM DTT, and 10% 16% PEG 6000. Drop: 4ul protein Solution: 4 ul reservoir solution, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 1.66 Å R-free 0.185
2 Protein heterocomplex Heteromer Protein × 8 PDB declaration: octameric(8) Consistent with protein copy count Chain A; UniProt 1–277 Mutation:Y197C,V266H ACE-ASP-GLU-VAL-ASP-CHLOROMETHYLKETONE INHIBITOR × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;291 K;Protein solution: 8 mg/ml protein in 10 mM Tris-HCl, pH 8.5, 10 mM DTT, and 3 mM NaN3. Reservoir solution: 100 mM sodium citrate, pH 5.0, 3 mM NaN3, 10 mM DTT, and 10% 16% PEG 6000. Drop: 4ul protein Solution: 4 ul reservoir solution, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 1.66 Å R-free 0.185

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 195 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CASP3_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; 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 4ehf

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id4ehf
Deposition date deposition_date2012-04-02
Structure title titleAllosteric Modulation of Caspase-3 through Mutagenesis
Keywords keywordscaspase, apoptosis, allosteric inhibition, protein ensembles, 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_guinier19.18
Radius of gyration Rg (electron density) rg_electron18.29
Forward intensity I(0) i026646600.00
Molecular weight molecular_weight26182.0 kDa
Excluded volume excluded_volume25136 ų
Envelope volume envelope_volume40710 ų
Hydration-shell volume shell_volume18601 ų
Envelope diameter envelope_diameter71.0
Shell Rg shell_rg24.80
Envelope Rg envelope_rg19.08
Shape Rg shape_rg18.26
Total Rg total_rg19.04
Total atoms total_atoms1970
Residues n_residues246
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 dmax72.2
Rg (real space) rg_real19.15
Rg uncertainty (real space) rg_real_error0.68
I(0) (real space) i0_real2.6650e+07
I(0) uncertainty (real space) i0_real_error4.1520e+05
Rg (reciprocal space) rg_reciprocal19.16
I(0) (reciprocal space) i0_reciprocal26650000.0000
Solution quality estimate total_estimate0.7296
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks4
Primary peak position r_peak_primary24.1
Skewness Skewness skewness0.391
Kurtosis Kurtosis kurtosis-0.019
Angular range angular_range— – 0.4150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4932000.0000
Real-space data points n_real_points73
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.536; Stabil: 0.992; Sysdev: 1.000; Positv: 1.000; Valcen: 0.896; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id4ehfA00
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)