1IAS

CYTOPLASMIC DOMAIN OF UNPHOSPHORYLATED TYPE I TGF-BETA RECEPTOR CRYSTALLIZED WITHOUT FKBP12


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.255 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The TGF beta receptor activation process: an inhibitor- to substrate-binding switch.

Huse, M.Muir, T.W.Xu, L.Chen, Y.G.Kuriyan, J.Massague, J.

(2001) Mol Cell 8: 671-682

  • DOI: 10.1016/s1097-2765(01)00332-x
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The type I TGF beta receptor (T beta R-I) is activated by phosphorylation of the GS region, a conserved juxtamembrane segment located just N-terminal to the kinase domain. We have studied the molecular mechanism of receptor activation using a homogen ...

    The type I TGF beta receptor (T beta R-I) is activated by phosphorylation of the GS region, a conserved juxtamembrane segment located just N-terminal to the kinase domain. We have studied the molecular mechanism of receptor activation using a homogeneously tetraphosphorylated form of T beta R-I, prepared using protein semisynthesis. Phosphorylation of the GS region dramatically enhances the specificity of T beta R-I for the critical C-terminal serines of Smad2. In addition, tetraphosphorylated T beta R-I is bound specifically by Smad2 in a phosphorylation-dependent manner and is no longer recognized by the inhibitory protein FKBP12. Thus, phosphorylation activates T beta R-I by switching the GS region from a binding site for an inhibitor into a binding surface for substrate. Our observations suggest that phosphoserine/phosphothreonine-dependent localization is a key feature of the T beta R-I/Smad activation process.


    Organizational Affiliation

    Laboratory of Molecular Biophysics, Rockefeller University, New York, NY 10021, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TGF-BETA RECEPTOR TYPE I
A, B, C, D, E
342Homo sapiensMutation(s): 0 
Gene Names: TGFBR1ALK5SKR4
EC: 2.7.1.37 (PDB Primary Data), 2.7.11.30 (UniProt)
Find proteins for P36897 (Homo sapiens)
Go to UniProtKB:  P36897
NIH Common Fund Data Resources
PHAROS  P36897
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, B, C, D, E
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.255 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 172.56α = 90
b = 251.617β = 90
c = 140.228γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-10-03
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance