3i0a

Crystal structure of Siderocalin (NGAL, Lipocalin 2) K134A mutant complexed with Ferric Enterobactin

Method: X-RAY DIFFRACTION Dmax: 94.0 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 1–198 Mutation:C87S, K134A SO4 SULFATE ION × 1 FE FE (III) ION × 1 3ET O-[(2R)-2-amino-3-(D-seryloxy)propanoyl]-N-[(2,3-dihydroxyphenyl)carbonyl]-L-serine × 1 2DS N-[(2,3-dihydroxyphenyl)carbonyl]-O-[(2R)-2-{[(2,3-dihydroxyphenyl)carbonyl]amino}-3-hydroxypropanoyl]-L-serine × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;291 K;1.3M Ammonium sulfate, 0.2M Lithium sulfate, 50mM sodium chloride, 0.1M sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 2.60 Å R-free 0.300
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1–198 Mutation:C87S, K134A FE FE (III) ION × 1 DBH 2,3-DIHYDROXY-BENZOIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;291 K;1.3M Ammonium sulfate, 0.2M Lithium sulfate, 50mM sodium chloride, 0.1M sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 2.60 Å R-free 0.300
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 1–198 Mutation:C87S, K134A SO4 SULFATE ION × 1 FE FE (III) ION × 1 GOL GLYCEROL × 2 MCJ N-[(2,3-dihydroxyphenyl)carbonyl]-O-[(2S)-2-{[(2,3-dihydroxyphenyl)carbonyl]amino}-3-({N-[(2,3-dihydroxyphenyl)carbonyl]-L-seryl}oxy)propanoyl]-D-serine × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;291 K;1.3M Ammonium sulfate, 0.2M Lithium sulfate, 50mM sodium chloride, 0.1M sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K Resolution 2.60 Å R-free 0.300

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 1–198; UniProt 1–198 Author chain B; PDBConstruct 1–198; UniProt 1–198 Author chain C; PDBConstruct 1–198; UniProt 1–198

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 3i0a

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3i0a
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3i0a
Deposition date deposition_date2009-06-24
Structure title titleCrystal structure of Siderocalin (NGAL, Lipocalin 2) K134A mutant complexed with Ferric Enterobactin
Keywords keywords;NGAL, p25, 25 kDa alpha-2-microglobulin-related subunit of MMP-9, Lipocalin-2, Oncogene 24p3, Disulfide bond, Glycoprotein, Pyrrolidone carboxylic acid, Secreted, ANTIMICROBIAL PROTEIN ;; ANTIMICROBIAL PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier30.17
Radius of gyration Rg (electron density) rg_electron29.25
Forward intensity I(0) i052195800.00
Molecular weight molecular_weight57371.0 kDa
Excluded volume excluded_volume71868 ų
Envelope volume envelope_volume95565 ų
Hydration-shell volume shell_volume27824 ų
Envelope diameter envelope_diameter96.5
Shell Rg shell_rg35.67
Envelope Rg envelope_rg29.02
Shape Rg shape_rg29.25
Total Rg total_rg29.92
Total atoms total_atoms4046
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 dmax94.0
Rg (real space) rg_real30.15
Rg uncertainty (real space) rg_real_error0.66
I(0) (real space) i0_real5.2200e+07
I(0) uncertainty (real space) i0_real_error8.3480e+05
Rg (reciprocal space) rg_reciprocal30.16
I(0) (reciprocal space) i0_reciprocal52200000.0000
Solution quality estimate total_estimate0.8889
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary24.8
Skewness Skewness skewness0.177
Kurtosis Kurtosis kurtosis-0.770
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha23580000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.904; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.959; Smooth: 0.880

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (9)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd3i0aa_
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_idd3i0ab_
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_idd3i0ac_
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_id3i0aA00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain
Domain ID domain_id3i0aB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain
Domain ID domain_id3i0aC00
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)