1KTZ

Crystal Structure of the Human TGF-beta Type II Receptor Extracellular Domain in Complex with TGF-beta3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the human TbetaR2 ectodomain--TGF-beta3 complex.

Hart, P.J.Deep, S.Taylor, A.B.Shu, Z.Hinck, C.S.Hinck, A.P.

(2002) Nat.Struct.Mol.Biol. 9: 203-208

  • DOI: 10.1038/nsb766

  • PubMed Abstract: 
  • Transforming growth factor-beta (TGF-beta) is the prototype of a large family of structurally related cytokines that play key roles in maintaining cellular homeostasis by signaling through two classes of functionally distinct Ser/Thr kinase receptors ...

    Transforming growth factor-beta (TGF-beta) is the prototype of a large family of structurally related cytokines that play key roles in maintaining cellular homeostasis by signaling through two classes of functionally distinct Ser/Thr kinase receptors, designated as type I and type II. TGF-beta initiates receptor assembly by binding with high affinity to the type II receptor. Here, we present the 2.15 A crystal structure of the extracellular ligand-binding domain of the human TGF-beta type II receptor (ecTbetaR2) in complex with human TGF-beta3. ecTbetaR2 interacts with homodimeric TGF-beta3 by binding identical finger segments at opposite ends of the growth factor. Relative to the canonical 'closed' conformation previously observed in ligand structures across the superfamily, ecTbetaR2-bound TGF-beta3 shows an altered arrangement of its monomeric subunits, designated the 'open' conformation. The mode of TGF-beta3 binding shown by ecTbetaR2 is compatible with both ligand conformations. This, in addition to the predicted mode for TGF-beta binding to the type I receptor ectodomain (ecTbetaR1), suggests an assembly mechanism in which ecTbetaR1 and ecTbetaR2 bind at adjacent positions on the ligand surface and directly contact each other via protein--protein interactions.


    Organizational Affiliation

    Department of Biochemistry and Center for Biomolecular Structure Analysis, University of Texas Health Science Center at San Antonio, 78229-3900, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSFORMING GROWTH FACTOR BETA 3
A
112Homo sapiensGene Names: TGFB3
Find proteins for P10600 (Homo sapiens)
Go to Gene View: TGFB3
Go to UniProtKB:  P10600
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TGF-beta Type II Receptor
B
122Homo sapiensGene Names: TGFBR2
EC: 2.7.11.30
Find proteins for P37173 (Homo sapiens)
Go to Gene View: TGFBR2
Go to UniProtKB:  P37173
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.201 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 114.410α = 90.00
b = 114.410β = 90.00
c = 209.430γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
SOLVEphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance