7FXS

Crystal Structure of human FABP4 binding site mutated to that of FABP5 in complex with 5-phenoxy-6-(2,2,2-trifluoroethoxy)-2-(trifluoromethyl)pyridine-3-carboxylic acid, i.e. SMILES c1(c(nc(c(c1)C(=O)O)C(F)(F)F)OCC(F)(F)F)Oc1ccccc1 with IC50=2.33933 microM

• PDB DOI: https://doi.org/10.2210/pdb7FXS/pdb
• Deposition Group: G_1002264 ExploreG_1002264

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


• Deposited: 2023-04-27 Released: 2023-06-14 
• Deposition Author(s): Ehler, A., Benz, J., Obst, U., Richter, H., Rudolph, M.G.
• Funding Organization(s): F. Hoffmann-La Roche LTD

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.25 Å
• R-Value Free: 0.188 
• R-Value Work: 0.148 
• R-Value Observed: 0.150 

Starting Model: other

Literature

Crystal Structure of a human FABP4 binding site mutated to that of FABP5 complex

Obst, U., Magnone, C., Kuhn, B., Rudolph, M.G.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 15.63 kDa 
• Atom Count: 1,263 
• Modelled Residue Count: 130 
• Deposited Residue Count: 135 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fatty acid-binding protein, adipocyte	A	135	Homo sapiens	Mutation(s): 8  Gene Names: FABP4
UniProt & NIH Common Fund Data Resources
Find proteins for P15090 (Homo sapiens) Explore P15090  Go to UniProtKB:  P15090
PHAROS:  P15090 GTEx:  ENSG00000170323

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TXO (Subject of Investigation/LOI)	D [auth A]	5-phenoxy-6-(2,2,2-trifluoroethoxy)-2-(trifluoromethyl)pyridine-3-carboxylic acid C15 H9 F6 N O4 XNHJSACITZKERU-UHFFFAOYSA-N
DMS	B [auth A], C [auth A], E [auth A]	DIMETHYL SULFOXIDE C2 H6 O S IAZDPXIOMUYVGZ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.25 Å
• R-Value Free: 0.188 
• R-Value Work: 0.148 
• R-Value Observed: 0.150 
• Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 32.141	α = 90
b = 52.612	β = 90
c = 72.212	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-06-14 
Deposition Author(s): Ehler, A., Benz, J., Obst, U., Richter, H., Rudolph, M.G.

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Funding Organization	Location	Grant Number
F. Hoffmann-La Roche LTD	Switzerland	--

Revision History  

• Version 1.0: 2023-06-14
  Type: Initial release
  
• Version 1.1: 2024-04-03
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-20
  Changes: Structure summary