6XM2

The structure of the 4A11.v7 antibody in complex with human TGFb2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.205 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

TGF beta 2 and TGF beta 3 isoforms drive fibrotic disease pathogenesis.

Sun, T.Huang, Z.Liang, W.C.Yin, J.Lin, W.Y.Wu, J.Vernes, J.M.Lutman, J.Caplazi, P.Jeet, S.Wong, T.Wong, M.DePianto, D.J.Morshead, K.B.Sun, K.H.Modrusan, Z.Vander Heiden, J.A.Abbas, A.R.Zhang, H.Xu, M.N'Diaye, E.N.Roose-Girma, M.Wolters, P.J.Yadav, R.Sukumaran, S.Ghilardi, N.Corpuz, R.Emson, C.Meng, Y.G.Ramalingam, T.R.Lupardus, P.Brightbill, H.D.Seshasayee, D.Wu, Y.Arron, J.R.

(2021) Sci Transl Med 13

  • DOI: https://doi.org/10.1126/scitranslmed.abe0407
  • Primary Citation of Related Structures:  
    6XM2

  • PubMed Abstract: 

    Transforming growth factor-β (TGFβ) is a key driver of fibrogenesis. Three TGFβ isoforms (TGFβ1, TGFβ2, and TGFβ3) in mammals have distinct functions in embryonic development; however, the postnatal pathological roles and activation mechanisms of TGFβ2 and TGFβ3 have not been well characterized. Here, we show that the latent forms of TGFβ2 and TGFβ3 can be activated by integrin-independent mechanisms and have lower activation thresholds compared to TGFβ1. Unlike TGFB1 , TGFB2 and TGFB3 expression is increased in human lung and liver fibrotic tissues compared to healthy control tissues. Thus, TGFβ2 and TGFβ3 may play a pathological role in fibrosis. Inducible conditional knockout mice and anti-TGFβ isoform-selective antibodies demonstrated that TGFβ2 and TGFβ3 are independently involved in mouse fibrosis models in vivo, and selective TGFβ2 and TGFβ3 inhibition does not lead to the increased inflammation observed with pan-TGFβ isoform inhibition. A cocrystal structure of a TGFβ2-anti-TGFβ2/3 antibody complex reveals an allosteric isoform-selective inhibitory mechanism. Therefore, inhibiting TGFβ2 and/or TGFβ3 while sparing TGFβ1 may alleviate fibrosis without toxicity concerns associated with pan-TGFβ blockade.


  • Organizational Affiliation

    Department of Immunology Discovery, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA. sun.tianhe@gene.com arron.joseph@gene.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
4A11.v7 kappa light chain Fab (VL-CL) humanized
A, C, E, G
219Homo sapiensMutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
4A11.v7 heavy chain Fab (VH-CH1) IgG1 humanized
B, D, F, H
233Homo sapiensMutation(s): 0 
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Transforming growth factor beta-2
I, J, K, L
112Homo sapiensMutation(s): 0 
Gene Names: TGFB2
UniProt & NIH Common Fund Data Resources
Find proteins for P61812 (Homo sapiens)
Explore P61812 
Go to UniProtKB:  P61812
PHAROS:  P61812
GTEx:  ENSG00000092969 
Entity Groups  
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UniProt GroupP61812
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.205 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.415α = 99.15
b = 85.108β = 99.51
c = 112.732γ = 97.32
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-07-07
    Type: Initial release
  • Version 1.1: 2021-08-25
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description
  • Version 1.3: 2024-10-23
    Changes: Structure summary