Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 6-mer - A2B2C2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A3B2C1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A2B2C2 Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Hetero 6-mer - A4B2 Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Hetero 4-mer - A2C2 

Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Hetero 4-mer - A2C2 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 243.11 kDa 
• Atom Count: 17,117 
• Modelled Residue Count: 2,179 
• Deposited Residue Count: 2,256 
• Unique protein chains: 3

 6XM2

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

• PDB DOI: 10.2210/pdb6XM2/pdb

• Classification: CYTOKINE/IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Escherichia coli, Cricetulus griseus
• Mutation(s): No 


• Deposited: 2020-06-29 Released: 2021-07-07 
• Deposition Author(s): Lupardus, P.J., Yin, J.P.

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Experimental Data Snapshot

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

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

• PubMed: 34349032 
• DOI: 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.

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Organizational Affiliation: 

Department of Immunology Discovery, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA. [e-mail] [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
4A11.v7 kappa light chain Fab (VL-CL) humanized	A, C, E, G	219	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
4A11.v7 heavy chain Fab (VH-CH1) IgG1 humanized	B, D, F, H	233	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Transforming growth factor beta-2	I, J, K, L	112	Homo sapiens	Mutation(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

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 = 64.415	α = 99.15
b = 85.108	β = 99.51
c = 112.732	γ = 97.32

Software Package:

Software Name	Purpose
BUSTER	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-07-07 
Deposition Author(s): Lupardus, P.J., Yin, J.P.

Revision History  

• Version 1.0: 2021-07-07
  Type: Initial release
  
• Version 1.1: 2021-08-25
  Changes: Database references