Structure of human Programmed cell death 1 ligand 1 (PD-L1) with low molecular mass inhibitor

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 

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Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Structural basis for small molecule targeting of the programmed death ligand 1 (PD-L1).

Zak, K.M.Grudnik, P.Guzik, K.Zieba, B.J.Musielak, B.Domling, A.Dubin, G.Holak, T.A.

(2016) Oncotarget 7: 30323-30335

  • DOI: https://doi.org/10.18632/oncotarget.8730
  • Primary Citation of Related Structures:  
    5J89, 5J8O

  • PubMed Abstract: 

    Targeting the PD-1/PD-L1 immunologic checkpoint with monoclonal antibodies has provided unprecedented results in cancer treatment in the recent years. Development of chemical inhibitors for this pathway lags the antibody development because of insufficient structural information. The first nonpeptidic chemical inhibitors that target the PD-1/PD-L1 interaction have only been recently disclosed by Bristol-Myers Squibb. Here, we show that these small-molecule compounds bind directly to PD-L1 and that they potently block PD-1 binding. Structural studies reveal a dimeric protein complex with a single small molecule which stabilizes the dimer thus occluding the PD-1 interaction surface of PD-L1s. The small-molecule interaction "hot spots" on PD-L1 surfaces suggest approaches for the PD-1/PD-L1 antagonist drug discovery.

  • Organizational Affiliation

    Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa, Krakow, Poland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Programmed cell death 1 ligand 1A [auth C],
B [auth A],
C [auth D],
D [auth B]
144Homo sapiensMutation(s): 0 
Gene Names: CD274B7H1PDCD1L1PDCD1LG1PDL1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NZQ7 (Homo sapiens)
Explore Q9NZQ7 
Go to UniProtKB:  Q9NZQ7
GTEx:  ENSG00000120217 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NZQ7
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 6GX

Download Ideal Coordinates CCD File 
E [auth C],
G [auth B]
C25 H29 N3 O3
Query on EDO

Download Ideal Coordinates CCD File 
F [auth A]1,2-ETHANEDIOL
C2 H6 O2
Binding Affinity Annotations 
IDSourceBinding Affinity
6GX BindingDB:  5J89 IC50: 18 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.834α = 90
b = 85.093β = 90
c = 161.772γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
European CommissionaPolandMarie Curie FP7-Reintegration-Grant
National Science CentrePolandUMO-2012/06/A/ST5/00224
National Science CentrePolandUMO-2011/01/D/NZ1/01169
European UnionPolandPOIG.02.01.00-12-064/08
European UnionPolandPOIG.02.01.00-12-167/08

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2016-09-14
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Refinement description