4k19

The structure of Human Siderocalin bound to the bacterial siderophore fluvibactin

Method: X-RAY DIFFRACTION Dmax: 94.5 Å Quality: GOOD

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 21–198 Fragment:unp residues 21-198 Mutation:C107S FE FE (III) ION × 1 GOL GLYCEROL × 2 SO4 SULFATE ION × 1 CL CHLORIDE ION × 1 1OD (4S,5R)-N,N-bis{3-[(2,3-dihydroxybenzoyl)amino]propyl}-2-(2,3-dihydroxyphenyl)-5-methyl-4,5-dihydro-1,3-oxazole-4-carboxamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;298 K;1.2M ammonium sulfate, 0.2M lithium sulfate, 0.1M sodium chloride, 0.1M sodium acetate , pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.74 Å R-free 0.294
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 21–198 Fragment:unp residues 21-198 Mutation:C107S FE FE (III) ION × 1 1OD (4S,5R)-N,N-bis{3-[(2,3-dihydroxybenzoyl)amino]propyl}-2-(2,3-dihydroxyphenyl)-5-methyl-4,5-dihydro-1,3-oxazole-4-carboxamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;298 K;1.2M ammonium sulfate, 0.2M lithium sulfate, 0.1M sodium chloride, 0.1M sodium acetate , pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.74 Å R-free 0.294
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 21–198 Fragment:unp residues 21-198 Mutation:C107S FE FE (III) ION × 1 GOL GLYCEROL × 1 SO4 SULFATE ION × 1 CL CHLORIDE ION × 1 1OD (4S,5R)-N,N-bis{3-[(2,3-dihydroxybenzoyl)amino]propyl}-2-(2,3-dihydroxyphenyl)-5-methyl-4,5-dihydro-1,3-oxazole-4-carboxamide × 1 NA SODIUM ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;298 K;1.2M ammonium sulfate, 0.2M lithium sulfate, 0.1M sodium chloride, 0.1M sodium acetate , pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.74 Å R-free 0.294

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 160 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 3–180; UniProt 21–198 Author chain B; PDBConstruct 3–180; UniProt 21–198 Author chain C; PDBConstruct 3–180; UniProt 21–198

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 4k19

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4k19
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4k19
Deposition date deposition_date2013-04-04
Structure title titleThe structure of Human Siderocalin bound to the bacterial siderophore fluvibactin
Keywords keywordsBeta Barrel, Antibacterial, Siderophore, metal binding protein-inhibitor complex; metal binding protein/inhibitor
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier30.33
Radius of gyration Rg (electron density) rg_electron29.52
Forward intensity I(0) i051345800.00
Molecular weight molecular_weight57650.0 kDa
Excluded volume excluded_volume72548 ų
Envelope volume envelope_volume96972 ų
Hydration-shell volume shell_volume27989 ų
Envelope diameter envelope_diameter97.1
Shell Rg shell_rg35.86
Envelope Rg envelope_rg29.21
Shape Rg shape_rg29.51
Total Rg total_rg30.21
Total atoms total_atoms4075
Residues n_residues513
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 dmax94.5
Rg (real space) rg_real30.31
Rg uncertainty (real space) rg_real_error0.66
I(0) (real space) i0_real5.1350e+07
I(0) uncertainty (real space) i0_real_error7.6390e+05
Rg (reciprocal space) rg_reciprocal30.32
I(0) (reciprocal space) i0_reciprocal51350000.0000
Solution quality estimate total_estimate0.8834
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.4
Skewness Skewness skewness0.164
Kurtosis Kurtosis kurtosis-0.803
Angular range angular_range— – 0.2600 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha29830000.0000
Real-space data points n_real_points53
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.892; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.936; Smooth: 0.867

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd4k19a_
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
Domain ID domain_idd4k19b_
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
Domain ID domain_idd4k19c_
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 (3 domains)

Domain ID domain_id4k19A00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain
Domain ID domain_id4k19B00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain
Domain ID domain_id4k19C00
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)