4que

Caspase-3 Y195FV266H

Method: X-RAY DIFFRACTION Dmax: 70.8 Å Quality: EXCELLENT

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 × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 1–277 Chain C; UniProt 1–277 Mutation:Y195F V266H ACE-ASP-GLU-VAL-ASP-CHLOROMETHYLKETONE INHIBITOR × 2 SHORT PEPTIDE × 2 DTT 2,3-DIHYDROXY-1,4-DITHIOBUTANE × 1 AZI AZIDE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 8.5;291 K;Proteins were dialyzed in a buffer of 10 mM Tris-HCl, pH 8.5, 1 mM DTT and concentrated to 10 mg/mL. Inhibitor, Ac-DEVD-CMK reconstituted in DMSO, was then added at a 5:1 inhibitor:peptide ratio (w/w). The protein was diluted to a concentration of 8 mg/mL by adding 10 mM Tris-HCl, pH 8.5, concentrated DTT, and concentrated NaN3 so that the final buffer consisted of 10 mM Tris-HCl, pH 8.5, 10 mM DTT, and 3 mM NaN3. Crystals were obtained at 291K by the hanging drop vapor diffusion method using 4 uL drops that contained equal volumes of protein and reservoir solutions over a 0.5 mL reservoir. The reservoir solutions for optimal crystal growth consisted of 100 mM sodium citrate, pH 5.0, 3 mM NaN3, 10 mM DTT, and 10% 16% PEG 6000 (w/v). Crystals appeared within 3.5 to 6 weeks for all mutants, VAPOR DIFFUSION, HANGING DROP Resolution 1.84 Å R-free 0.223

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
Chains and sequence ranges Author chain A; PDBConstruct 1–277; UniProt 1–277 Author chain C; 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 4que

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id4que
Deposition date deposition_date2014-07-10
Structure title titleCaspase-3 Y195FV266H
Keywords keywordsAllosteric Network, 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_guinier23.17
Radius of gyration Rg (electron density) rg_electron22.17
Forward intensity I(0) i099750500.00
Molecular weight molecular_weight52150.0 kDa
Excluded volume excluded_volume50113 ų
Envelope volume envelope_volume78286 ų
Hydration-shell volume shell_volume28407 ų
Envelope diameter envelope_diameter72.8
Shell Rg shell_rg30.01
Envelope Rg envelope_rg22.35
Shape Rg shape_rg22.14
Total Rg total_rg22.82
Total atoms total_atoms3929
Residues n_residues484
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 dmax70.8
Rg (real space) rg_real23.02
Rg uncertainty (real space) rg_real_error0.35
I(0) (real space) i0_real9.9750e+07
I(0) uncertainty (real space) i0_real_error1.2350e+06
Rg (reciprocal space) rg_reciprocal23.06
I(0) (reciprocal space) i0_reciprocal99750000.0000
Solution quality estimate total_estimate0.9066
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.4
Skewness Skewness skewness0.129
Kurtosis Kurtosis kurtosis-0.555
Angular range angular_range— – 0.3450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha16060000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.941; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.970

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id4queA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1460
Domain ID domain_id4queC00
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)