3cru

Structural characterization of an engineered allosteric protein

Method: X-RAY DIFFRACTION Dmax: 58.0 Å Quality: GOOD

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

Glutathione S-transferase class-mu 26 kDa isozyme

Schistosoma japonicum

UniProt P08515

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–214 Mutation:L50C GSH Glutathione × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 9.5;298 K;20% PEG8000, 50 mM Tris-HCL, 3 mM B-ME., pH 9.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.30 Å R-free 0.291

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.

64 other PDB entries and 70 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name GST26_SCHJA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–214; UniProt 1–214

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 3cru

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3cru
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3cru
Deposition date deposition_date2008-04-07
Structure title titleStructural characterization of an engineered allosteric protein
Keywords keywordsprotein design, allosteric switch, pH-response, Transferase; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier18.72
Radius of gyration Rg (electron density) rg_electron17.39
Forward intensity I(0) i010691500.00
Molecular weight molecular_weight25332.0 kDa
Excluded volume excluded_volume32089 ų
Envelope volume envelope_volume36539 ų
Hydration-shell volume shell_volume17524 ų
Envelope diameter envelope_diameter58.1
Shell Rg shell_rg23.58
Envelope Rg envelope_rg17.65
Shape Rg shape_rg17.36
Total Rg total_rg18.49
Total atoms total_atoms1780
Residues n_residues214
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 dmax58.0
Rg (real space) rg_real18.60
Rg uncertainty (real space) rg_real_error0.30
I(0) (real space) i0_real1.0690e+07
I(0) uncertainty (real space) i0_real_error1.2640e+05
Rg (reciprocal space) rg_reciprocal18.62
I(0) (reciprocal space) i0_reciprocal10690000.0000
Solution quality estimate total_estimate0.8993
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary57.2
Skewness Skewness skewness0.127
Kurtosis Kurtosis kurtosis-0.462
Angular range angular_range— – 0.4250 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2713000.0000
Real-space data points n_real_points74
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.901; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.994

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_idd3crua1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.47 — Thioredoxin fold
Superfamily Superfamily superfamilyc.47.1 — Thioredoxin-like
Family Family familyc.47.1.5 — Glutathione S-transferase (GST), N-terminal domain
Domain ID domain_idd3crua2
Class classa — All alpha proteins
Fold Fold folda.45 — GST C-terminal domain-like
Superfamily Superfamily superfamilya.45.1 — GST C-terminal domain-like
Family Family familya.45.1.1 — Glutathione S-transferase (GST), C-terminal domain

CATH v4.4 (2 domains)

Domain ID domain_id3cruA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology30 — Glutaredoxin
Homologous superfamily homologous superfamily10 — Glutaredoxin
Domain ID domain_id3cruA02
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily10

8. Citations (1)

9. Files and Curves (10)