5nkn

Crystal structure of an Anticalin-colchicine complex

Method: X-RAY DIFFRACTION Dmax: 49.4 Å Quality: REASONABLE

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

Neutrophil gelatinase-associated lipocalin

Homo sapiens

UniProt P80188

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 25–198 Not recorded LOC N-[(7S)-1,2,3,10-tetramethoxy-9-oxo-6,7-dihydro-5H-benzo[d]heptalen-7-yl]ethanamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;293 K;2.2 M (NH4)2SO4, 200 mM Li2SO4, 100 mM Tris/HCl Resolution 2.20 Å R-free 0.266

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.

57 other PDB entries and 162 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name NGAL_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–174; UniProt 25–198

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 5nkn

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5nkn
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5nkn
Deposition date deposition_date2017-03-31
Structure title titleCrystal structure of an Anticalin-colchicine complex
Keywords keywordsbeta-barrel, colchicine, Lcn2, lipocalin, NGAL, protein engineering, transport protein; TRANSPORT PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier16.76
Radius of gyration Rg (electron density) rg_electron15.26
Forward intensity I(0) i07031150.00
Molecular weight molecular_weight20132.0 kDa
Excluded volume excluded_volume25519 ų
Envelope volume envelope_volume28782 ų
Hydration-shell volume shell_volume15495 ų
Envelope diameter envelope_diameter54.7
Shell Rg shell_rg21.67
Envelope Rg envelope_rg15.64
Shape Rg shape_rg15.22
Total Rg total_rg16.59
Total atoms total_atoms1423
Residues n_residues172
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 dmax49.4
Rg (real space) rg_real16.60
Rg uncertainty (real space) rg_real_error0.06
I(0) (real space) i0_real6.7890e+06
I(0) uncertainty (real space) i0_real_error5.5340e+04
Rg (reciprocal space) rg_reciprocal16.64
I(0) (reciprocal space) i0_reciprocal7031000.0000
Solution quality estimate total_estimate0.7247
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary23.1
Skewness Skewness skewness0.035
Kurtosis Kurtosis kurtosis-0.419
Angular range angular_range— – 0.4750 −1
Current regularization parameter α current_alpha11.3600
Highest regularization parameter α highest_alpha2025000.0000
Real-space data points n_real_points78
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.924; Stabil: 0.923; Sysdev: 0.000; Positv: 1.000; Valcen: 0.967; Smooth: 0.926

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd5nkna_
Class classb — All beta proteins
Fold Fold foldb.60 — Lipocalins
Superfamily Superfamily superfamilyb.60.1 — Lipocalins
Family Family familyb.60.1.1 — Retinol binding protein-like

CATH v4.4 (1 domains)

Domain ID domain_id5nknA00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain

8. Citations (1)

9. Files and Curves (10)