6K0Y

Study of the interactions of a novel monoclonal antibody, mAb059c, with the hPD-1 receptor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

wwPDB Validation   3D Report Full Report


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Literature

Study of the interactions of a novel monoclonal antibody, mAb059c, with the hPD-1 receptor.

Liu, J., Wang, G., Liu, L., Wu, R., Wu, Y., Fang, C., Zhou, X., Jiao, J., Gu, Y., Zhou, H., Xie, Z., Sun, Z., Chen, D., Dai, K., Wang, D., Tang, W., Yang, T.T.C.

(2019) Sci Rep 9: 17830-17830

  • DOI: 10.1038/s41598-019-54231-w
  • Primary Citation of Related Structures:  
    6K0Y

  • PubMed Abstract: 

    • Programmed cell death 1 (PD-1) monoclonal antibodies have been approved by regulatory agencies for the treatment of various types of cancer, and the mechanism involves the restoration of T cell functions. We report herein the X-ray crystal structure of a fully human monoclonal antibody mAb059c fragment antigen-binding (Fab) in complex with the PD-1 extracellular domain (ECD) at a resolution of 1 ...

    Programmed cell death 1 (PD-1) monoclonal antibodies have been approved by regulatory agencies for the treatment of various types of cancer, and the mechanism involves the restoration of T cell functions. We report herein the X-ray crystal structure of a fully human monoclonal antibody mAb059c fragment antigen-binding (Fab) in complex with the PD-1 extracellular domain (ECD) at a resolution of 1.70 Å. Structural analysis indicates 1) an epitope, comprising fragments from the C'D, BC and FG loops of PD-1, contributes to mAb059c interaction, 2) an unique conformation of the C'D loop and a different orientation of R86 enabling the capture of PD-1 by the antibody complementarity determining region (CDR) and the formation of one salt-bridge contact - ASP101(HCDR3):ARG86(PD-1), and 3) the contact of FG with light chain (LC) CDR3 is maintained by a second salt-bridge and two backbone hydrogen bonds. Interface analysis reveals that N-glycosylation sites 49, 74 and 116 on PD-1 do not contact mAb059c; while N58 in the BC loop is recognized by mAb059c heavy chain CDR1 and CDR2. Mutation of N58 attenuated mAb059c binding to PD-1. These findings and the novel anti-PD-1 antibody will facilitate better understanding of the mechanisms of the molecular recognition of PD-1 receptor by anti-PD-1 mAb and, thereby, enable the development of new therapeutics with an expanded spectrum of efficacy for unmet medical needs.

    Organizational Affiliation: 

    Shanghai ChemPartner Co.Ltd, Shanghai, 201203, The People's Republic of China. tyang3@chempartner.com.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Antibody Heavy ChainA218Homo sapiensMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Antibody Light ChainB214Homo sapiensMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Programmed cell death protein 1C143Homo sapiensMutation(s): 1 
Gene Names: PDCD1, PD1
UniProt & NIH Common Fund Data Resources
Find proteins for Q15116 (Homo sapiens)
Explore Q15116 
Go to UniProtKB:  Q15116
PHAROS:  Q15116
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15116
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Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.952α = 90
b = 102.59β = 90
c = 137.723γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2019-05-08 
  • Released Date: 2019-12-11 
    • Deposition Author(s): Liu, J.X., Wang, G.Q.

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-11
    Type: Initial release