1tpd

STRUCTURES OF THE "OPEN" AND "CLOSED" STATE OF TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE, AS OBSERVED IN A NEW CRYSTAL FORM: IMPLICATIONS FOR THE REACTION MECHANISM

Method: X-RAY DIFFRACTION Dmax: 89.6 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 1–250 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.10 Å
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–250 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.10 Å
3 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 1–250 Not recorded No other associated polymer X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 2.10 Å

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 78 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 1–250; UniProt 1–250 Author chain B; PDBConstruct 1–250; UniProt 1–250

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 1tpd

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1tpd
Deposition date deposition_date1994-02-28
Structure title titleSTRUCTURES OF THE "OPEN" AND "CLOSED" STATE OF TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE, AS OBSERVED IN A NEW CRYSTAL FORM: IMPLICATIONS FOR THE REACTION MECHANISM
Keywords keywordsISOMERASE(INTRAMOLECULAR OXIDOREDUCTASE); ISOMERASE(INTRAMOLECULAR OXIDOREDUCTASE)
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier28.12
Radius of gyration Rg (electron density) rg_electron27.48
Forward intensity I(0) i045607100.00
Molecular weight molecular_weight53418.0 kDa
Excluded volume excluded_volume67436 ų
Envelope volume envelope_volume83469 ų
Hydration-shell volume shell_volume25986 ų
Envelope diameter envelope_diameter94.5
Shell Rg shell_rg33.91
Envelope Rg envelope_rg27.28
Shape Rg shape_rg27.46
Total Rg total_rg28.25
Total atoms total_atoms3766
Residues n_residues498
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 dmax89.6
Rg (real space) rg_real28.20
Rg uncertainty (real space) rg_real_error0.64
I(0) (real space) i0_real4.5610e+07
I(0) uncertainty (real space) i0_real_error7.4680e+05
Rg (reciprocal space) rg_reciprocal28.18
I(0) (reciprocal space) i0_reciprocal45610000.0000
Solution quality estimate total_estimate0.8909
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.2
Skewness Skewness skewness0.333
Kurtosis Kurtosis kurtosis-0.639
Angular range angular_range— – 0.2800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha10610000.0000
Real-space data points n_real_points57
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.899; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.924; Smooth: 0.956

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1tpda_
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_idd1tpdb_
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_id1tpdA00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I
Domain ID domain_id1tpdB00
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)