1kv5

Structure of Trypanosoma brucei brucei TIM with the salt-bridge-forming residue Arg191 mutated to Ser

Method: X-RAY DIFFRACTION Dmax: 79.9 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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–250 Chain B; UniProt 1–250 Mutation:R191S PGA 2-PHOSPHOGLYCOLIC ACID × 2 DTT 2,3-DIHYDROXY-1,4-DITHIOBUTANE × 1 GOL GLYCEROL × 4 SO4 SULFATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.5;295 K;ammonium sulfate, sodium chloride, citric acid, pH 5.5, VAPOR DIFFUSION, HANGING DROP at 295K Resolution 1.65 Å R-free 0.175

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 1–250; 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 1kv5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1kv5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1kv5
Deposition date deposition_date2002-01-25
Structure title titleStructure of Trypanosoma brucei brucei TIM with the salt-bridge-forming residue Arg191 mutated to Ser
Keywords keywordsTIM barrel, mutant, salt bridge, isomerase; ISOMERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier25.58
Radius of gyration Rg (electron density) rg_electron24.55
Forward intensity I(0) i047815600.00
Molecular weight molecular_weight54208.0 kDa
Excluded volume excluded_volume68196 ų
Envelope volume envelope_volume77867 ų
Hydration-shell volume shell_volume26744 ų
Envelope diameter envelope_diameter82.2
Shell Rg shell_rg31.72
Envelope Rg envelope_rg24.75
Shape Rg shape_rg24.53
Total Rg total_rg25.42
Total atoms total_atoms3811
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 dmax79.9
Rg (real space) rg_real25.62
Rg uncertainty (real space) rg_real_error0.44
I(0) (real space) i0_real4.7820e+07
I(0) uncertainty (real space) i0_real_error6.4520e+05
Rg (reciprocal space) rg_reciprocal25.61
I(0) (reciprocal space) i0_reciprocal47820000.0000
Solution quality estimate total_estimate0.8970
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.8
Skewness Skewness skewness0.382
Kurtosis Kurtosis kurtosis-0.495
Angular range angular_range— – 0.3100 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha14140000.0000
Real-space data points n_real_points63
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.912; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.986; Smooth: 0.934

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1kv5a_
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_idd1kv5b_
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_id1kv5A00
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I
Domain ID domain_id1kv5B00
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)