1dkw

CRYSTAL STRUCTURE OF TRIOSE-PHOSPHATE ISOMERASE WITH MODIFIED SUBSTRATE BINDING SITE

Method: X-RAY DIFFRACTION Dmax: 86.6 Å Quality: GOOD

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

TRIOSEPHOSPHATE ISOMERASE

Trypanosoma brucei brucei

UniProt P04789

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 2–250 Chain B; UniProt 2–250 Not recorded TBU TERTIARY-BUTYL ALCOHOL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.5;277 K;1.0 M CITRIC ACID PH 6.5, 20% PEG6000, 2.5% T-BUTANOL, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K Resolution 2.65 Å R-free 0.242

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.

48 other PDB entries and 80 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name TPIS_TRYBB
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–238; UniProt 2–250 Author chain B; PDBConstruct 1–238; UniProt 2–250

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 1dkw

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1dkw
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1dkw
Deposition date deposition_date1999-12-08
Structure title titleCRYSTAL STRUCTURE OF TRIOSE-PHOSPHATE ISOMERASE WITH MODIFIED SUBSTRATE BINDING SITE
Keywords keywordsTIM BARREL, MODIFIED LOOP-8, ISOMERASE; ISOMERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier26.22
Radius of gyration Rg (electron density) rg_electron25.53
Forward intensity I(0) i042023800.00
Molecular weight molecular_weight50955.0 kDa
Excluded volume excluded_volume64276 ų
Envelope volume envelope_volume78878 ų
Hydration-shell volume shell_volume26484 ų
Envelope diameter envelope_diameter90.1
Shell Rg shell_rg31.96
Envelope Rg envelope_rg25.35
Shape Rg shape_rg25.52
Total Rg total_rg26.34
Total atoms total_atoms3597
Residues n_residues472
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 dmax86.6
Rg (real space) rg_real26.27
Rg uncertainty (real space) rg_real_error0.59
I(0) (real space) i0_real4.2020e+07
I(0) uncertainty (real space) i0_real_error5.3770e+05
Rg (reciprocal space) rg_reciprocal26.25
I(0) (reciprocal space) i0_reciprocal42020000.0000
Solution quality estimate total_estimate0.8831
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary28.4
Skewness Skewness skewness0.383
Kurtosis Kurtosis kurtosis-0.440
Angular range angular_range— – 0.3050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha9525000.0000
Real-space data points n_real_points62
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.850; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.965; Smooth: 0.963

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_idd1dkwa_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamilyc.1.1 — Triosephosphate isomerase (TIM)
Family Family familyc.1.1.1 — Triosephosphate isomerase (TIM)
Domain ID domain_idd1dkwb_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamilyc.1.1 — Triosephosphate isomerase (TIM)
Family Family familyc.1.1.1 — Triosephosphate isomerase (TIM)

CATH v4.4 (2 domains)

Domain ID domain_id1dkwA00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I
Domain ID domain_id1dkwB00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I

8. Citations (3)

9. Files and Curves (10)