5TX4

Derivative of mouse TGF-beta2, with a deletion of residues 52-71 and K25R, R26K, L51R, A74K, C77S, L89V, I92V, K94R T95K, I98V single amino acid substitutions, bound to human TGF-beta type II receptor ectodomain residues 15-130

  • Classification: TRANSFERASE/CYTOKINE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): 10 

  • Deposited: 2016-11-15 Released: 2017-03-01 
  • Deposition Author(s): Hinck, A.P., Kim, S.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences; National Institutes of Health/National Cancer Institute; Robert A. Welch Foundation 

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.876 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

An engineered transforming growth factor beta (TGF-beta ) monomer that functions as a dominant negative to block TGF-beta signaling.

Kim, S.K.Barron, L.Hinck, C.S.Petrunak, E.M.Cano, K.E.Thangirala, A.Iskra, B.Brothers, M.Vonberg, M.Leal, B.Richter, B.Kodali, R.Taylor, A.B.Du, S.Barnes, C.O.Sulea, T.Calero, G.Hart, P.J.Hart, M.J.Demeler, B.Hinck, A.P.

(2017) J. Biol. Chem. 292: 7173-7188

  • DOI: 10.1074/jbc.M116.768754
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The transforming growth factor β isoforms, TGF-β1, -β2, and -β3, are small secreted homodimeric signaling proteins with essential roles in regulating the adaptive immune system and maintaining the extracellular matrix. However, dysregulation of the T ...

    The transforming growth factor β isoforms, TGF-β1, -β2, and -β3, are small secreted homodimeric signaling proteins with essential roles in regulating the adaptive immune system and maintaining the extracellular matrix. However, dysregulation of the TGF-β pathway is responsible for promoting the progression of several human diseases, including cancer and fibrosis. Despite the known importance of TGF-βs in promoting disease progression, no inhibitors have been approved for use in humans. Herein, we describe an engineered TGF-β monomer, lacking the heel helix, a structural motif essential for binding the TGF-β type I receptor (TβRI) but dispensable for binding the other receptor required for TGF-β signaling, the TGF-β type II receptor (TβRII), as an alternative therapeutic modality for blocking TGF-β signaling in humans. As shown through binding studies and crystallography, the engineered monomer retained the same overall structure of native TGF-β monomers and bound TβRII in an identical manner. Cell-based luciferase assays showed that the engineered monomer functioned as a dominant negative to inhibit TGF-β signaling with a Ki of 20-70 nm Investigation of the mechanism showed that the high affinity of the engineered monomer for TβRII, coupled with its reduced ability to non-covalently dimerize and its inability to bind and recruit TβRI, enabled it to bind endogenous TβRII but prevented it from binding and recruiting TβRI to form a signaling complex. Such engineered monomers provide a new avenue to probe and manipulate TGF-β signaling and may inform similar modifications of other TGF-β family members.


    Organizational Affiliation

    the Departments of Biochemistry and Structural Biology and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TGF-beta receptor type-2
A
116Homo sapiensMutation(s): 0 
Gene Names: TGFBR2
EC: 2.7.11.30
Find proteins for P37173 (Homo sapiens)
Go to Gene View: TGFBR2
Go to UniProtKB:  P37173
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transforming growth factor beta-2
B
92Homo sapiensMutation(s): 10 
Gene Names: TGFB2
Find proteins for P61812 (Homo sapiens)
Go to Gene View: TGFB2
Go to UniProtKB:  P61812
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.876 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.019α = 90.00
b = 70.772β = 90.00
c = 77.116γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
iMOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2016-11-15 
  • Released Date: 2017-03-01 
  • Deposition Author(s): Hinck, A.P., Kim, S.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM58670
National Institutes of Health/National Cancer InstituteUnited StatesCA172886
Robert A. Welch FoundationUnited StatesAQ1842

Revision History 

  • Version 1.0: 2017-03-01
    Type: Initial release
  • Version 1.1: 2017-03-08
    Type: Database references
  • Version 1.2: 2017-05-10
    Type: Database references
  • Version 1.3: 2017-09-27
    Type: Author supporting evidence