5UTZ

Human IL-2/Fab complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 

wwPDB Validation 3D Report Full Report



Literature

A human anti-IL-2 antibody that potentiates regulatory T cells by a structure-based mechanism.

Trotta, E.Bessette, P.H.Silveria, S.L.Ely, L.K.Jude, K.M.Le, D.T.Holst, C.R.Coyle, A.Potempa, M.Lanier, L.L.Garcia, K.C.Crellin, N.K.Rondon, I.J.Bluestone, J.A.

(2018) Nat Med 24: 1005-1014

  • DOI: 10.1038/s41591-018-0070-2
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Interleukin-2 (IL-2) has been shown to suppress immune pathologies by preferentially expanding regulatory T cells (T regs ). However, this therapy has been limited by off-target complications due to pathogenic cell expansion. Recent effort ...

    Interleukin-2 (IL-2) has been shown to suppress immune pathologies by preferentially expanding regulatory T cells (T regs ). However, this therapy has been limited by off-target complications due to pathogenic cell expansion. Recent efforts have been focused on developing a more selective IL-2. It is well documented that certain anti-mouse IL-2 antibodies induce conformational changes that result in selective targeting of T regs . We report the generation of a fully human anti-IL-2 antibody, F5111.2, that stabilizes IL-2 in a conformation that results in the preferential STAT5 phosphorylation of T regs in vitro and selective expansion of T regs in vivo. When complexed with human IL-2, F5111.2 induced remission of type 1 diabetes in the NOD mouse model, reduced disease severity in a model of experimental autoimmune encephalomyelitis and protected mice against xenogeneic graft-versus-host disease. These results suggest that IL-2-F5111.2 may provide an immunotherapy to treat autoimmune diseases and graft-versus-host disease.


    Organizational Affiliation

    Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA. Jeff.Bluestone@ucsf.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fab 5111 heavy chain
B, F, H, J
224Homo sapiensMutation(s): 0 
Gene Names: IGH@
Find proteins for Q6GMX6 (Homo sapiens)
Go to UniProtKB:  Q6GMX6

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab 5111 light chain
C, G, K, L
216Homo sapiensMutation(s): 0 
Gene Names: IGL@
Find proteins for Q6IPQ0 (Homo sapiens)
Go to UniProtKB:  Q6IPQ0

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Interleukin-2
A, D, E, I
133Homo sapiensMutation(s): 0 
Gene Names: IL2
Find proteins for P60568 (Homo sapiens)
Go to UniProtKB:  P60568
NIH Common Fund Data Resources
PHAROS  P60568
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download CCD File 
B, C, G, J, L
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
B,F,H,J
L-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 
  • Space Group: P 1 21 1
  • Diffraction Data DOI: 10.15785/SBGRID/424 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.01α = 90
b = 145.73β = 95.38
c = 107.32γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR01 AI51321

Revision History 

  • Version 1.0: 2018-07-11
    Type: Initial release
  • Version 1.1: 2018-07-25
    Changes: Data collection, Database references
  • Version 2.0: 2019-12-11
    Changes: Author supporting evidence, Polymer sequence