Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction | Predict Membrane 

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18.43 kDa 
• Atom Count: 1277 
• Modelled Residue Count: 123 
• Deposited Residue Count: 162 
• Unique protein chains: 1

1PWA

Crystal structure of Fibroblast Growth Factor 19

• PDB DOI: 10.2210/pdb1PWA/pdb

• Classification: HORMONE/GROWTH FACTOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2003-07-01 Released: 2004-01-27 
• Deposition Author(s): Harmer, N.J., Pellegrini, L., Chirgadze, D., Fernandez-Recio, J., Blundell, T.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.30 Å
• R-Value Free: 0.195 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 

Literature

The crystal structure of fibroblast growth factor (FGF) 19 reveals novel features of the FGF family and offers a structural basis for its unusual receptor affinity.

Harmer, N.J., Pellegrini, L., Chirgadze, D., Fernandez-Recio, J., Blundell, T.L.

(2004) Biochemistry 43: 629-640

• PubMed: 14730967 
• DOI: 10.1021/bi035320k
• Primary Citation of Related Structures:  
  1PWA


• PubMed Abstract: 
  

The 22 members of the FGF family have been implicated in cell proliferation, differentiation, survival, and migration. They are required for both development and maintenance of vertebrates, demonstrating an exquisite pattern of affinities for both protein and proteoglycan receptors. FGF19, one of the most divergent human FGFs, is unique in binding solely to one receptor, FGFR4. We have used molecular replacement to solve the crystal structure of FGF19 at 1.3 A resolution using five superimposed FGF structures as the search model. The structure shows that two novel disulfide bonds found in FGF19, one of which appears to be conserved among several of the other FGFs, stabilize extended loops. The key heparin-binding loops of FGF19 have radically different conformations and charge patterns, compared to other FGFs, correlating with the unusually low affinity of FGF19 for heparin. A model for the complex of FGF19 with FGFR4 demonstrates that unique sequences in both FGF19 and FGFR4 are key to the formation of the complex. The structure therefore offers a clear explanation for the unusual affinity of FGF19 for FGFR4 alone.

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Organizational Affiliation: 

Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, United Kingdom. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fibroblast growth factor-19	A	162	Homo sapiens	Mutation(s): 0  Gene Names: FGF19, UNQ334/PRO533 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for O95750 (Homo sapiens) Explore O95750  Go to UniProtKB:  O95750
PHAROS:  O95750

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TRS	C [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.30 Å
• R-Value Free: 0.195 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 
• Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.573	α = 90
b = 67.573	β = 90
c = 193.374	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-07-01 
• Released Date: 2004-01-27 
Deposition Author(s): Harmer, N.J., Pellegrini, L., Chirgadze, D., Fernandez-Recio, J., Blundell, T.L.

Revision History  

• Version 1.0: 2004-01-27
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2014-04-16
  Changes: Data collection