2x1t

Crystallographic binding studies with an engineered monomeric variant of triosephosphate isomerase

Method: X-RAY DIFFRACTION Dmax: 82.7 Å Quality: GOOD

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

TRIOSEPHOSPHATE ISOMERASE, GLYCOSOMAL

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 2–13 Chain A; UniProt 15–72 Chain A; UniProt 80–234 Chain A; UniProt 238–250 Fragment:RESIDUES 2-13,15-72,80-234,238-250 Mutation:YES No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:pH 5.5;20% PEG6000, 0.1M CITRATE, PH 5.5 Resolution 1.83 Å R-free 0.219
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 2–13 Chain B; UniProt 15–72 Chain B; UniProt 80–234 Chain B; UniProt 238–250 Fragment:RESIDUES 2-13,15-72,80-234,238-250 Mutation:YES RES 4-PHOSPHO-D-ERYTHRONOHYDROXAMIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 5.5;20% PEG6000, 0.1M CITRATE, PH 5.5 Resolution 1.83 Å R-free 0.219

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 79 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 1–12; UniProt 2–13 Author chain A; PDBConstruct 13–70; UniProt 15–72 Author chain A; PDBConstruct 71–225; UniProt 80–234 Author chain A; PDBConstruct 226–238; UniProt 238–250 Author chain B; PDBConstruct 1–12; UniProt 2–13 Author chain B; PDBConstruct 13–70; UniProt 15–72 Author chain B; PDBConstruct 71–225; UniProt 80–234 Author chain B; PDBConstruct 226–238; UniProt 238–250

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 2x1t

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2x1t
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id2x1t
Deposition date deposition_date2010-01-04
Structure title titleCrystallographic binding studies with an engineered monomeric variant of triosephosphate isomerase
Keywords keywordsFATTY ACID BIOSYNTHESIS, GLUCONEOGENESIS, GLYCOLYSIS, GLYCOSOME, ISOMERASE, LIPID SYNTHESIS; ISOMERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.99
Radius of gyration Rg (electron density) rg_electron23.03
Forward intensity I(0) i042301100.00
Molecular weight molecular_weight51054.0 kDa
Excluded volume excluded_volume64332 ų
Envelope volume envelope_volume75343 ų
Hydration-shell volume shell_volume27296 ų
Envelope diameter envelope_diameter82.3
Shell Rg shell_rg30.19
Envelope Rg envelope_rg23.05
Shape Rg shape_rg23.03
Total Rg total_rg23.88
Total atoms total_atoms3601
Residues n_residues471
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 dmax82.7
Rg (real space) rg_real23.95
Rg uncertainty (real space) rg_real_error0.60
I(0) (real space) i0_real4.2300e+07
I(0) uncertainty (real space) i0_real_error6.3230e+05
Rg (reciprocal space) rg_reciprocal23.96
I(0) (reciprocal space) i0_reciprocal42300000.0000
Solution quality estimate total_estimate0.8651
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.4
Skewness Skewness skewness0.359
Kurtosis Kurtosis kurtosis-0.238
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha12930000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.760; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.982

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_idd2x1ta_
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_idd2x1tb_
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_id2x1tA00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I
Domain ID domain_id2x1tB00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I

8. Citations (1)

9. Files and Curves (10)