4AJV

Structure of mouse ZP-C domain of TGF-Beta-Receptor-3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Identification of a Novel Tgf-Beta-Binding Site in the Zona Pellucida C-Terminal (Zp-C) Domain of Tgf-Beta-Receptor-3 (Tgfr-3).

Diestel, U.Resch, M.Meinhardt, K.Weiler, S.Hellmann, T.V.Mueller, T.D.Nickel, J.Eichler, J.Muller, Y.A.

(2013) Plos One 8: 67214

  • DOI: 10.1371/journal.pone.0067214

  • PubMed Abstract: 
  • The zona pellucida (ZP) domain is present in extracellular proteins such as the zona pellucida proteins and tectorins and participates in the formation of polymeric protein networks. However, the ZP domain also occurs in the cytokine signaling co-rec ...

    The zona pellucida (ZP) domain is present in extracellular proteins such as the zona pellucida proteins and tectorins and participates in the formation of polymeric protein networks. However, the ZP domain also occurs in the cytokine signaling co-receptor transforming growth factor β (TGF-β) receptor type 3 (TGFR-3, also known as betaglycan) where it contributes to cytokine ligand recognition. Currently it is unclear how the ZP domain architecture enables this dual functionality. Here, we identify a novel major TGF-β-binding site in the FG loop of the C-terminal subdomain of the murine TGFR-3 ZP domain (ZP-C) using protein crystallography, limited proteolysis experiments, surface plasmon resonance measurements and synthetic peptides. In the murine 2.7 Å crystal structure that we are presenting here, the FG-loop is disordered, however, well-ordered in a recently reported homologous rat ZP-C structure. Surprisingly, the adjacent external hydrophobic patch (EHP) segment is registered differently in the rat and murine structures suggesting that this segment only loosely associates with the remaining ZP-C fold. Such a flexible and temporarily-modulated association of the EHP segment with the ZP domain has been proposed to control the polymerization of ZP domain-containing proteins. Our findings suggest that this flexibility also extends to the ZP domain of TGFR-3 and might facilitate co-receptor ligand interaction and presentation via the adjacent FG-loop. This hints that a similar C-terminal region of the ZP domain architecture possibly regulates both the polymerization of extracellular matrix proteins and cytokine ligand recognition of TGFR-3.


    Organizational Affiliation

    Lehrstuhl fuer Biotechnik, Department of Biology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSFORMING GROWTH FACTOR BETA RECEPTOR TYPE 3
A
167Mus musculusGene Names: Tgfbr3
Find proteins for O88393 (Mus musculus)
Go to UniProtKB:  O88393
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.660α = 90.00
b = 56.820β = 90.00
c = 60.240γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-27
    Type: Initial release
  • Version 1.1: 2013-07-17
    Type: Database references