1jco

Solution structure of the monomeric [Thr(B27)->Pro,Pro(B28)->Thr] insulin mutant (PT insulin)

Method: SOLUTION NMR Dmax: 31.5 Å Quality: REASONABLE

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

Insulin A chain

Homo sapiens

UniProt P01308

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 90–110 Chain B; UniProt 25–54 Mutation:T27P, P28T No other associated polymer SOLUTION NMR NMR measurement conditions:pH 3.13;298 K;Pressure 1 NMR sample composition:2.8 mM PT-insulin; 10%D2O; 90%H2O | 10% D2O, 90% H2O NMR sample composition:2.8 mM PT-insulin; 100% D2O | 100% D2O NMR sample composition:2.8 mM PT-insulin; 35% Trifluoroethanol; 5% D2O; 60% H2O | 35% Trifluoroethanol; 5% D2O; 60% H2O NMR sample composition:2.8 mM PT-insulin; 35% Trifluoroethanol; 65% D2O; | 35% Trifluoroethanol; 65% D2O; Resolution not provided

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.

369 other PDB entries and 583 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name INS_HUMAN
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 1–21; UniProt 90–110 Author chain B; PDBConstruct 1–30; UniProt 25–54

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 1jco

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1jco
Deposition date deposition_date2001-06-11
Structure title titleSolution structure of the monomeric [Thr(B27)->Pro,Pro(B28)->Thr] insulin mutant (PT insulin)
Keywords keywordsHelix-turn-helix, Coil-helix-coil, HORMONE-GROWTH FACTOR COMPLEX; HORMONE/GROWTH FACTOR
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier11.75
Radius of gyration Rg (electron density) rg_electron11.95
Forward intensity I(0) i0309682000.00
Molecular weight molecular_weight145290.0 kDa
Excluded volume excluded_volume180230 ų
Envelope volume envelope_volume29171 ų
Hydration-shell volume shell_volume14994 ų
Envelope diameter envelope_diameter63.6
Shell Rg shell_rg22.59
Envelope Rg envelope_rg17.65
Shape Rg shape_rg11.95
Total Rg total_rg12.33
Total atoms total_atoms19650
Residues n_residues1275
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 dmax31.5
Rg (real space) rg_real10.94
Rg uncertainty (real space) rg_real_error0.05
I(0) (real space) i0_real2.9580e+08
I(0) uncertainty (real space) i0_real_error2.0170e+06
Rg (reciprocal space) rg_reciprocal11.93
I(0) (reciprocal space) i0_reciprocal309700000.0000
Solution quality estimate total_estimate0.6849
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks0
Primary peak position r_peak_primary
Skewness Skewness skewness0.310
Kurtosis Kurtosis kurtosis-0.346
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha2.5290
Highest regularization parameter α highest_alpha204600.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.005; Oscil: 0.980; Stabil: 0.989; Sysdev: 0.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1jco.1
Class classg — Small proteins
Fold Fold foldg.1 — Insulin-like
Superfamily Superfamily superfamilyg.1.1 — Insulin-like
Family Family familyg.1.1.1 — Insulin-like

8. Citations (1)

9. Files and Curves (10)