4AY9

Structure of follicle-stimulating hormone in complex with the entire ectodomain of its receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.237 

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Literature

Structure of Follicle-Stimulating Hormone in Complex with the Entire Ectodomain of its Receptor.

Jiang, X.Liu, H.Chen, X.Chen, P.Fischer, D.Sriraman, V.Yu, H.N.Arkinstall, S.He, X.

(2012) Proc Natl Acad Sci U S A 109: 12491

  • DOI: 10.1073/pnas.1206643109
  • Primary Citation of Related Structures:  
    4AY9

  • PubMed Abstract: 
  • FSH, a glycoprotein hormone, and the FSH receptor (FSHR), a G protein-coupled receptor, play central roles in human reproduction. We report the crystal structure of FSH in complex with the entire extracellular domain of FSHR (FSHR(ED)), including the enigmatic hinge region that is responsible for signal specificity ...

    FSH, a glycoprotein hormone, and the FSH receptor (FSHR), a G protein-coupled receptor, play central roles in human reproduction. We report the crystal structure of FSH in complex with the entire extracellular domain of FSHR (FSHR(ED)), including the enigmatic hinge region that is responsible for signal specificity. Surprisingly, the hinge region does not form a separate structural unit as widely anticipated but is part of the integral structure of FSHR(ED). In addition to the known hormone-binding site, FSHR(ED) provides interaction sites with the hormone: a sulfotyrosine (sTyr) site in the hinge region consistent with previous studies and a potential exosite resulting from putative receptor trimerization. Our structure, in comparison to others, suggests FSHR interacts with its ligand in two steps: ligand recruitment followed by sTyr recognition. FSH first binds to the high-affinity hormone-binding subdomain of FSHR and reshapes the ligand conformation to form a sTyr-binding pocket. FSHR then inserts its sTyr (i.e., sulfated Tyr335) into the FSH nascent pocket, eventually leading to receptor activation.


    Organizational Affiliation

    EMD Serono Research Institute, Billerica, MA 01821, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GLYCOPROTEIN HORMONES, ALPHA POLYPEPTIDEA, C [auth D], E [auth G]92Homo sapiensMutation(s): 0 
Gene Names: CGA
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Find proteins for P01215 (Homo sapiens)
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PHAROS:  P01215
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
FOLLITROPIN SUBUNIT BETAB, D [auth E], F [auth H]111Homo sapiensMutation(s): 0 
Gene Names: FSHB
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Find proteins for P01225 (Homo sapiens)
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PHAROS:  P01225
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
FOLLICLE-STIMULATING HORMONE RECEPTORG [auth X], H [auth Y], I [auth Z]350Homo sapiensMutation(s): 0 
Gene Names: FSHRLGR1
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Find proteins for P23945 (Homo sapiens)
Explore P23945 
Go to UniProtKB:  P23945
PHAROS:  P23945
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TYS
Query on TYS
G [auth X], H [auth Y], I [auth Z]L-PEPTIDE LINKINGC9 H11 N O6 STYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.237 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.716α = 60.3
b = 95.478β = 80.02
c = 95.675γ = 75.35
Software Package:
Software NamePurpose
REFMACrefinement
HKL-3000data reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-08-08
    Type: Initial release
  • Version 1.1: 2012-08-15
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary