3HWD

Crystal structure of Siderocalin (NGAL, Lipocalin 2) K125A-K134A mutant complexed with Ferric Enterobactin

• PDB DOI: https://doi.org/10.2210/pdb3HWD/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2009-06-17 Released: 2010-06-02 
• Deposition Author(s): Clifton, M.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.303 
• R-Value Work: 0.257 
• R-Value Observed: 0.260 

Starting Model: experimental

Literature

Parsing the functional specificity of Siderocalin / Lipocalin 2 / NGAL for siderophores and related small-molecule ligands

Clifton, M.C., Rupert, P.B., Hoette, T.M., Raymond, K.N., Abergel, R.J., Strong, R.K.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Macromolecule Content

• Total Structure Weight: 67.61 kDa 
• Atom Count: 3,923 
• Modelled Residue Count: 512 
• Deposited Residue Count: 594 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Neutrophil gelatinase-associated lipocalin	A, B, C	198	Homo sapiens	Mutation(s): 3  Gene Names: HNL, LCN2, NGAL
UniProt & NIH Common Fund Data Resources
Find proteins for P80188 (Homo sapiens) Explore P80188  Go to UniProtKB:  P80188
PHAROS:  P80188 GTEx:  ENSG00000148346

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NA	D [auth A], E [auth C], F [auth C], G [auth C], H [auth C], I [auth C], J [auth C]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.95 Å
• R-Value Free: 0.303 
• R-Value Work: 0.257 
• R-Value Observed: 0.260 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 115.825	α = 90
b = 115.825	β = 90
c = 119.316	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
REFMAC	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-06-02 
Deposition Author(s): Clifton, M.C.

Revision History  

• Version 1.0: 2010-06-02
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2019-02-27
  Changes: Data collection, Database references
• Version 1.3: 2021-10-13
  Changes: Database references, Derived calculations
• Version 1.4: 2023-09-06
  Changes: Data collection, Refinement description