1xda

STRUCTURE OF INSULIN

Method: X-RAY DIFFRACTION Dmax: 82.8 Å Quality: GOOD

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

FATTY ACID ACYLATED INSULIN

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 25–53 Not recorded IPH PHENOL × 1 ZN ZINC ION × 1 CL CHLORIDE ION × 1 MYR MYRISTIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
10 Protein homooligomer Homooligomer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain C; UniProt 90–110 Chain D; UniProt 25–53 Not recorded IPH PHENOL × 3 ZN ZINC ION × 3 CL CHLORIDE ION × 3 MYR MYRISTIC ACID × 3 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
11 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain E; UniProt 90–110 Chain F; UniProt 25–53 Chain G; UniProt 90–110 Chain H; UniProt 25–53 Not recorded IPH PHENOL × 2 ZN ZINC ION × 2 CL CHLORIDE ION × 2 MYR MYRISTIC ACID × 2 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
12 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 90–110 Chain B; UniProt 25–53 Chain C; UniProt 90–110 Chain D; UniProt 25–53 Not recorded IPH PHENOL × 2 ZN ZINC ION × 2 CL CHLORIDE ION × 2 MYR MYRISTIC ACID × 2 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 90–110 Chain D; UniProt 25–53 Not recorded IPH PHENOL × 1 ZN ZINC ION × 1 CL CHLORIDE ION × 1 MYR MYRISTIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
3 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain E; UniProt 90–110 Chain F; UniProt 25–53 Not recorded IPH PHENOL × 1 ZN ZINC ION × 1 CL CHLORIDE ION × 1 MYR MYRISTIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
4 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain G; UniProt 90–110 Chain H; UniProt 25–53 Not recorded IPH PHENOL × 1 ZN ZINC ION × 1 CL CHLORIDE ION × 1 MYR MYRISTIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
5 Protein homooligomer Homooligomer Protein × 12 PDB declaration: dodecameric(12) Consistent with protein copy count Chain E; UniProt 90–110 Chain F; UniProt 25–53 Chain G; UniProt 90–110 Chain H; UniProt 25–53 Not recorded IPH PHENOL × 6 ZN ZINC ION × 6 CL CHLORIDE ION × 6 MYR MYRISTIC ACID × 6 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
6 Protein homooligomer Homooligomer Protein × 12 PDB declaration: dodecameric(12) Consistent with protein copy count Chain A; UniProt 90–110 Chain B; UniProt 25–53 Chain C; UniProt 90–110 Chain D; UniProt 25–53 Not recorded IPH PHENOL × 6 ZN ZINC ION × 6 CL CHLORIDE ION × 6 MYR MYRISTIC ACID × 6 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
7 Protein homooligomer Homooligomer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 90–110 Chain B; UniProt 25–53 Not recorded IPH PHENOL × 3 ZN ZINC ION × 3 CL CHLORIDE ION × 3 MYR MYRISTIC ACID × 3 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
8 Protein homooligomer Homooligomer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain E; UniProt 90–110 Chain F; UniProt 25–53 Not recorded IPH PHENOL × 3 ZN ZINC ION × 3 CL CHLORIDE ION × 3 MYR MYRISTIC ACID × 3 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 Å
9 Protein homooligomer Homooligomer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain G; UniProt 90–110 Chain H; UniProt 25–53 Not recorded IPH PHENOL × 3 ZN ZINC ION × 3 CL CHLORIDE ION × 3 MYR MYRISTIC ACID × 3 X-RAY DIFFRACTION X-ray crystallization conditions:pH 8.2;HANGING DROP, 0.1M TRI-SODIUM CITRATE, 6% (W/V) TRIS, 0.02% (W/V) ZINC ACETATE, PH 8.2. Resolution 1.80 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.

369 other PDB entries and 572 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 C; PDBConstruct 1–21; UniProt 90–110 Author chain E; PDBConstruct 1–21; UniProt 90–110 Author chain G; PDBConstruct 1–21; UniProt 90–110 Author chain B; PDBConstruct 1–29; UniProt 25–53 Author chain D; PDBConstruct 1–29; UniProt 25–53 Author chain F; PDBConstruct 1–29; UniProt 25–53 Author chain H; PDBConstruct 1–29; UniProt 25–53

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 1xda

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1xda
Deposition date deposition_date1996-12-18
Structure title titleSTRUCTURE OF INSULIN
Keywords keywordsHORMONE, METABOLIC ROLE, CHEMICAL ACTIVITY, INSULIN ALBUMIN, FATTY ACID, GLUCOSE METABOLISM, DIABETES; HORMONE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.15
Radius of gyration Rg (electron density) rg_electron24.11
Forward intensity I(0) i010519300.00
Molecular weight molecular_weight24467.0 kDa
Excluded volume excluded_volume30631 ų
Envelope volume envelope_volume38380 ų
Hydration-shell volume shell_volume14979 ų
Envelope diameter envelope_diameter81.7
Shell Rg shell_rg28.28
Envelope Rg envelope_rg24.28
Shape Rg shape_rg24.09
Total Rg total_rg24.79
Total atoms total_atoms1688
Residues n_residues200
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 dmax82.8
Rg (real space) rg_real24.51
Rg uncertainty (real space) rg_real_error0.80
I(0) (real space) i0_real1.0520e+07
I(0) uncertainty (real space) i0_real_error1.6210e+05
Rg (reciprocal space) rg_reciprocal24.43
I(0) (reciprocal space) i0_reciprocal10520000.0000
Solution quality estimate total_estimate0.7549
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary19.4
Skewness Skewness skewness0.519
Kurtosis Kurtosis kurtosis-0.569
Angular range angular_range— – 0.3300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2039000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.510; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.328; Smooth: 0.950

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1xda.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
Domain ID domain_idd1xda.2
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
Domain ID domain_idd1xda.3
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
Domain ID domain_idd1xda.4
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 (3)

9. Files and Curves (10)