8BFW

The structures of Ace2 in complex with bicyclic peptide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.323 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.253 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structure-Guided Chemical Optimization of Bicyclic Peptide ( Bicycle ) Inhibitors of Angiotensin-Converting Enzyme 2.

Harman, M.A.J.Stanway, S.J.Scott, H.Demydchuk, Y.Bezerra, G.A.Pellegrino, S.Chen, L.Brear, P.Lulla, A.Hyvonen, M.Beswick, P.J.Skynner, M.J.

(2023) J Med Chem 66: 9881-9893

  • DOI: https://doi.org/10.1021/acs.jmedchem.3c00710
  • Primary Citation of Related Structures:  
    8B9P, 8BFW, 8BN1, 8BYJ

  • PubMed Abstract: 

    Angiotensin-converting enzyme 2 (ACE2) is a metalloprotease that cleaves angiotensin II, a peptide substrate involved in the regulation of hypertension. Here, we identified a series of constrained bicyclic peptides, Bicycle , inhibitors of human ACE2 by panning highly diverse bacteriophage display libraries. These were used to generate X-ray crystal structures which were used to inform the design of additional Bicycles with increased affinity and inhibition of ACE2 enzymatic activity. This novel structural class of ACE2 inhibitors is among the most potent ACE2 inhibitors yet described in vitro , representing a valuable tool to further probe ACE2 function and for potential therapeutic utility.


  • Organizational Affiliation

    BicycleTx Ltd., Portway Building Blocks A and B, Granta Park, Great Abington, Cambridge CB21 6GS, U.K.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Processed angiotensin-converting enzyme 2
A, C
609Homo sapiensMutation(s): 0 
Gene Names: ACE2UNQ868/PRO1885
EC: 3.4.17 (UniProt), 3.4.17.23 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BYF1 (Homo sapiens)
Explore Q9BYF1 
Go to UniProtKB:  Q9BYF1
PHAROS:  Q9BYF1
GTEx:  ENSG00000130234 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BYF1
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
ALA-CYS-VAL-ARG-SER-HIS-CYS-SER-SER-LEU-LEU-PRO-ARG-ILE-HIS-CYS-ALA-NH2
B, D
18synthetic constructMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.323 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.253 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.937α = 90
b = 76.966β = 108.93
c = 124.226γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data scaling
PDB_EXTRACTdata extraction
xia2data reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other private--

Revision History  (Full details and data files)

  • Version 1.0: 2023-10-04
    Type: Initial release
  • Version 1.1: 2023-10-11
    Changes: Database references
  • Version 1.2: 2024-10-23
    Changes: Structure summary