5VAQ

Crystal Structure of Beta-Klotho in Complex with FGF21CT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.606 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of beta-klotho reveal a 'zip code'-like mechanism for endocrine FGF signalling.

Lee, S.Choi, J.Mohanty, J.Sousa, L.P.Tome, F.Pardon, E.Steyaert, J.Lemmon, M.A.Lax, I.Schlessinger, J.

(2018) Nature 553: 501-505

  • DOI: 10.1038/nature25010
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Canonical fibroblast growth factors (FGFs) activate FGF receptors (FGFRs) through paracrine or autocrine mechanisms in a process that requires cooperation with heparan sulfate proteoglycans, which function as co-receptors for FGFR activation. By cont ...

    Canonical fibroblast growth factors (FGFs) activate FGF receptors (FGFRs) through paracrine or autocrine mechanisms in a process that requires cooperation with heparan sulfate proteoglycans, which function as co-receptors for FGFR activation. By contrast, endocrine FGFs (FGF19, FGF21 and FGF23) are circulating hormones that regulate critical metabolic processes in a variety of tissues. FGF19 regulates bile acid synthesis and lipogenesis, whereas FGF21 stimulates insulin sensitivity, energy expenditure and weight loss. Endocrine FGFs signal through FGFRs in a manner that requires klothos, which are cell-surface proteins that possess tandem glycosidase domains. Here we describe the crystal structures of free and ligand-bound β-klotho extracellular regions that reveal the molecular mechanism that underlies the specificity of FGF21 towards β-klotho and demonstrate how the FGFR is activated in a klotho-dependent manner. β-Klotho serves as a primary 'zip code'-like receptor that acts as a targeting signal for FGF21, and FGFR functions as a catalytic subunit that mediates intracellular signalling. Our structures also show how the sugar-cutting enzyme glycosidase has evolved to become a specific receptor for hormones that regulate metabolic processes, including the lowering of blood sugar levels. Finally, we describe an agonistic variant of FGF21 with enhanced biological activity and present structural insights into the potential development of therapeutic agents for diseases linked to endocrine FGFs.


    Organizational Affiliation

    VIB Center for Structural Biology, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.,Department of Pharmacology and Yale Cancer Biology Institute, Yale School of Medicine, 333 Cedar Street, New Haven, Connecticut 06520, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-klotho
A
954Homo sapiensMutation(s): 2 
Gene Names: KLB
Find proteins for Q86Z14 (Homo sapiens)
Go to Gene View: KLB
Go to UniProtKB:  Q86Z14
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nb914
B
134N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fibroblast growth factor 21
C
24Homo sapiensMutation(s): 0 
Gene Names: FGF21
Find proteins for Q9NSA1 (Homo sapiens)
Go to Gene View: FGF21
Go to UniProtKB:  Q9NSA1
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.606 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.647α = 90.00
b = 145.487β = 90.00
c = 213.827γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-01-31
    Type: Initial release
  • Version 1.1: 2018-02-07
    Type: Database references