4qe1

Room temperature X-ray structure of D-xylose isomerase in complex with two Cd2+ ions and L-ribulose

Method: X-RAY DIFFRACTION Dmax: 85.3 Å Quality: GOOD

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

Xylose isomerase

OrganismNot specified

UniProt P24300

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 1–388 Not recorded CD CADMIUM ION × 8 RUU alpha-L-ribulofuranose × 4 X-RAY DIFFRACTION X-ray crystallization conditions:batch;pH 7.7;291 K;30% ammonium sulfate, 0.1 M HEPES pH 7.7, batch, temperature 291K Resolution 1.55 Å R-free 0.190

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.

139 other PDB entries and 143 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name XYLA_STRRU
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–388; UniProt 1–388

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 4qe1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4qe1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4qe1
Deposition date deposition_date2014-05-15
Structure title titleRoom temperature X-ray structure of D-xylose isomerase in complex with two Cd2+ ions and L-ribulose
Keywords keywordsTIM barrel, sugar isomerase, monosaccharides, isomerase; ISOMERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.54
Radius of gyration Rg (electron density) rg_electron23.48
Forward intensity I(0) i034745900.00
Molecular weight molecular_weight43566.0 kDa
Excluded volume excluded_volume53708 ų
Envelope volume envelope_volume69509 ų
Hydration-shell volume shell_volume25202 ų
Envelope diameter envelope_diameter87.8
Shell Rg shell_rg29.82
Envelope Rg envelope_rg24.38
Shape Rg shape_rg23.49
Total Rg total_rg24.19
Total atoms total_atoms3065
Residues n_residues388
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 dmax85.3
Rg (real space) rg_real24.64
Rg uncertainty (real space) rg_real_error0.73
I(0) (real space) i0_real3.4750e+07
I(0) uncertainty (real space) i0_real_error5.0390e+05
Rg (reciprocal space) rg_reciprocal24.61
I(0) (reciprocal space) i0_reciprocal34750000.0000
Solution quality estimate total_estimate0.8508
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.1
Skewness Skewness skewness0.495
Kurtosis Kurtosis kurtosis-0.109
Angular range angular_range— – 0.3250 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6243000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.730; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.890; Smooth: 0.975

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd4qe1a_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamilyc.1.15 — Xylose isomerase-like
Family Family familyc.1.15.3 — Xylose isomerase

CATH v4.4 (1 domains)

Domain ID domain_id4qe1A00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily150 — Divalent-metal-dependent TIM barrel enzymes

8. Citations (1)

9. Files and Curves (10)