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 (NIH/NIGMS); National Institutes of Health/National Cancer Institute (NIH/NCI); 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 1.4 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:  
  • Also Cited By: 6I9J

  • 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 K i 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

    Center for Innovative Drug Discovery, University of Texas Health Science Center, San Antonio, Texas 78229-3900, and.,From the Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15260.,Cell Systems and Anatomy.,From the Department of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15260, ahinck@pitt.edu.,the National Research Council, Human Health Therapeutics Portfolio, Montréal, Quebec H4P 2R2, Canada.,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 Sciences (NIH/NIGMS)United StatesGM58670
National Institutes of Health/National Cancer Institute (NIH/NCI)United 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
  • Version 1.4: 2019-12-04
    Type: Author supporting evidence