4KEG | pdb_00004keg

Crystal Structure of MBP Fused Human SPLUNC1

• PDB DOI: https://doi.org/10.2210/pdb4KEG/pdb

• Classification: LIPID BINDING PROTEIN
• Organism(s): Escherichia coli, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-04-25 Released: 2014-04-30 
• Deposition Author(s): Ning, F., Wang, C., Niu, L., Chu, H.W., Zhang, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 
  0.259 (Depositor), 0.259 (DCC) 
• R-Value Work: 
  0.205 (Depositor), 0.203 (DCC) 
• R-Value Observed: 
  0.208 (Depositor) 

Literature

The Lipid Ligands of the SPLUNC1 Protein

Ning, F., Wang, C., Berry, K.Z., Kandasamy, P., Liu, H., Murphy, R.C., Voelker, D., Nho, C.W., Pan, C.H., Dai, S., Niu, L., Chu, H.W., Zhang, G.

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: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 63.07 kDa 
• Atom Count: 4,158 
• Modeled Residue Count: 535 
• Deposited Residue Count: 584 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltose-binding periplasmic/Palate lung and nasal epithelium clone fusion protein	A	584	Escherichia coli, Homo sapiens This entity is chimeric	Mutation(s): 0  Gene Names: PLUNC
UniProt & NIH Common Fund Data Resources
Find proteins for P0AEX9 (Escherichia coli (strain K12)) Explore P0AEX9  Go to UniProtKB:  P0AEX9
Find proteins for Q9NP55 (Homo sapiens) Explore Q9NP55  Go to UniProtKB:  Q9NP55
PHAROS:  Q9NP55 GTEx:  ENSG00000198183
UniProt Groups	Q9NP55P0AEX9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BOG	B [auth A]	octyl beta-D-glucopyranoside C14 H28 O6 HEGSGKPQLMEBJL-RKQHYHRCSA-N
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free:  0.259 (Depositor), 0.259 (DCC) 
• R-Value Work:  0.205 (Depositor), 0.203 (DCC) 
• R-Value Observed: 0.208 (Depositor) 

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 118.768	α = 90
b = 118.768	β = 90
c = 98.223	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-04-30 
Deposition Author(s): Ning, F., Wang, C., Niu, L., Chu, H.W., Zhang, G.

Revision History  

• Version 1.0: 2014-04-30
  Type: Initial release
  
• Version 1.1: 2017-08-02
  Changes: Advisory, Data collection, Refinement description, Source and taxonomy
• Version 1.2: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Database references, Derived calculations, Structure summary
• Version 1.3: 2024-11-06
  Changes: Advisory, Data collection, Database references, Structure summary