1kat

Solution Structure of a Phage-Derived Peptide Antagonist in Complex with Vascular Endothelial Growth Factor

Method: SOLUTION NMR Dmax: 74.9 Å Quality: GOOD

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

Vascular Endothelial Growth Factor

Homo sapiens

UniProt P15692

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 heterocomplex Heteromer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain V; UniProt 37–135 Chain W; UniProt 37–135 Fragment:Receptor Binding Domain Phage-Derived Peptide Antagonist × 2 SOLUTION NMR NMR measurement conditions:pH 7;308 K;Ionic strength (raw mmCIF value) 50mM sodium chloride, 20 sodium phosphate;Pressure 1 NMR measurement conditions:pH 7;318 K;Ionic strength (raw mmCIF value) 50mM sodium chloride, 20 sodium phosphate;Pressure 1 NMR measurement conditions:pH 7;298 K;Ionic strength (raw mmCIF value) 50mM sodium chloride, 20 sodium phosphate;Pressure 1 NMR sample composition:0.6mM U-13C/15N labeled v107 + 0.45 mM unlabeled VEGF Dimer; 50mM sodium chloride, 20mM phosphate buffer, 0.002% sodium azide | 90% H2O/10% D2O NMR sample composition:0.6mM U-13C/15N labeled v107 + 0.45 mM unlabeled VEGF Dimer; 50mM sodium chloride, 20mM phosphate buffer, 0.002% sodium azide | 100% D2O NMR sample composition:1.0mM U-13C/15N labeled VEGF dimer + 2.25 mM unlabeled v107; 50mM sodium chloride, 20mM phosphate buffer, 0.002% sodium azide | 90% H2O/10% D2O NMR sample composition:1.0mM U-13C/15N labeled VEGF dimer + 2.25 mM unlabeled v107; 50mM sodium chloride, 20mM phosphate buffer, 0.002% sodium azide | 100% D2O NMR sample composition:0.6mM U-13C/15N labeled v107 + 0.45 mM unlabeled VEGF Dimer; 50mM sodium chloride, 20mM phosphate buffer, 0.002% sodium azide, 15mg/ml pf1 phage | 90% H2O/10% D2O NMR sample composition:1.0mM U-13C/15N labeled VEGF Dimer + 2.25 mM unlabeled v107; 50mM sodium chloride, 20mM phosphate buffer, 0.002% sodium azide, 15mg/ml pf1 phage | 90% H2O/10% 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.

50 other PDB entries and 72 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name VEGFA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain V; PDBConstruct 1–99; UniProt 37–135 Author chain W; PDBConstruct 1–99; UniProt 37–135

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 1kat

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1kat
Deposition date deposition_date2001-11-02
Structure title titleSolution Structure of a Phage-Derived Peptide Antagonist in Complex with Vascular Endothelial Growth Factor
Keywords keywordsProtein-peptide complex, homodimer, cystine knot, CELL CYCLE, HORMONE-GROWTH FACTOR COMPLEX; CELL CYCLE, HORMONE/GROWTH FACTOR
Experimental Method methodSOLUTION NMR

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

Radius of gyration Rg (Guinier) rg_guinier21.86
Radius of gyration Rg (electron density) rg_electron21.73
Forward intensity I(0) i06955720000.00
Molecular weight molecular_weight670510.0 kDa
Excluded volume excluded_volume820420 ų
Envelope volume envelope_volume70684 ų
Hydration-shell volume shell_volume24569 ų
Envelope diameter envelope_diameter85.2
Shell Rg shell_rg31.07
Envelope Rg envelope_rg24.40
Shape Rg shape_rg21.80
Total Rg total_rg21.60
Total atoms total_atoms90144
Residues n_residues5664
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 dmax74.9
Rg (real space) rg_real21.96
Rg uncertainty (real space) rg_real_error0.54
I(0) (real space) i0_real6.9560e+09
I(0) uncertainty (real space) i0_real_error9.0050e+07
Rg (reciprocal space) rg_reciprocal21.95
I(0) (reciprocal space) i0_reciprocal6956000000.0000
Solution quality estimate total_estimate0.8700
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.4
Skewness Skewness skewness0.437
Kurtosis Kurtosis kurtosis-0.276
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1371000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.834; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.852; Smooth: 0.951

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_idd1katv_
Class classg — Small proteins
Fold Fold foldg.17 — Cystine-knot cytokines
Superfamily Superfamily superfamilyg.17.1 — Cystine-knot cytokines
Family Family familyg.17.1.1 — Platelet-derived growth factor-like
Domain ID domain_idd1katw_
Class classg — Small proteins
Fold Fold foldg.17 — Cystine-knot cytokines
Superfamily Superfamily superfamilyg.17.1 — Cystine-knot cytokines
Family Family familyg.17.1.1 — Platelet-derived growth factor-like

CATH v4.4 (2 domains)

Domain ID domain_id1katV00
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology90 — Cystine Knot Cytokines, subunit B
Homologous superfamily homologous superfamily10 — Cystine-knot cytokines
Domain ID domain_id1katW00
Class class2 — Mainly Beta
Architecture architecture10 — Ribbon
Topology topology90 — Cystine Knot Cytokines, subunit B
Homologous superfamily homologous superfamily10 — Cystine-knot cytokines

8. Citations (1)

9. Files and Curves (10)