3BIK

Crystal Structure of the PD-1/PD-L1 Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The PD-1/PD-L1 complex resembles the antigen-binding Fv domains of antibodies and T cell receptors.

Lin, D.Y.Tanaka, Y.Iwasaki, M.Gittis, A.G.Su, H.P.Mikami, B.Okazaki, T.Honjo, T.Minato, N.Garboczi, D.N.

(2008) Proc.Natl.Acad.Sci.Usa 105: 3011-3016

  • DOI: 10.1073/pnas.0712278105
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Signaling through the programmed death 1 (PD-1) inhibitory receptor upon binding its ligand, PD-L1, suppresses immune responses against autoantigens and tumors and plays an important role in the maintenance of peripheral immune tolerance. Release fro ...

    Signaling through the programmed death 1 (PD-1) inhibitory receptor upon binding its ligand, PD-L1, suppresses immune responses against autoantigens and tumors and plays an important role in the maintenance of peripheral immune tolerance. Release from PD-1 inhibitory signaling revives "exhausted" virus-specific T cells in chronic viral infections. Here we present the crystal structure of murine PD-1 in complex with human PD-L1. PD-1 and PD-L1 interact through the conserved front and side of their Ig variable (IgV) domains, as do the IgV domains of antibodies and T cell receptors. This places the loops at the ends of the IgV domains on the same side of the PD-1/PD-L1 complex, forming a surface that is similar to the antigen-binding surface of antibodies and T cell receptors. Mapping conserved residues allowed the identification of residues that are important in forming the PD-1/PD-L1 interface. Based on the structure, we show that some reported loss-of-binding mutations involve the PD-1/PD-L1 interaction but that others compromise protein folding. The PD-1/PD-L1 interaction described here may be blocked by antibodies or by designed small-molecule drugs to lower inhibitory signaling that results in a stronger immune response. The immune receptor-like loops offer a new surface for further study and potentially the design of molecules that would affect PD-1/PD-L1 complex formation and thereby modulate the immune response.


    Organizational Affiliation

    Structural Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Twinbrook 2, 12441 Parklawn Drive, Rockville, MD 20852, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Programmed cell death 1 ligand 1
A
222Homo sapiensMutation(s): 0 
Gene Names: CD274 (B7H1, PDCD1L1, PDCD1LG1, PDL1)
Find proteins for Q9NZQ7 (Homo sapiens)
Go to Gene View: CD274
Go to UniProtKB:  Q9NZQ7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Programmed cell death protein 1
B, C
134Mus musculusMutation(s): 1 
Gene Names: Pdcd1 (Pd1)
Find proteins for Q02242 (Mus musculus)
Go to UniProtKB:  Q02242
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
C
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 56.460α = 90.00
b = 63.940β = 90.00
c = 159.920γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHASERphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-02-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance