6XIF

PCSK9(deltaCRD) in complex with cyclic peptide 83


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.188 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 3.0 of the entry. See complete history


Literature

Series of Novel and Highly Potent Cyclic Peptide PCSK9 Inhibitors Derived from an mRNA Display Screen and Optimized via Structure-Based Design.

Alleyne, C.Amin, R.P.Bhatt, B.Bianchi, E.Blain, J.C.Boyer, N.Branca, D.Embrey, M.W.Ha, S.N.Jette, K.Johns, D.G.Kerekes, A.D.Koeplinger, K.A.LaPlaca, D.Li, N.Murphy, B.Orth, P.Ricardo, A.Salowe, S.Seyb, K.Shahripour, A.Stringer, J.R.Sun, Y.Tracy, R.Wu, C.Xiong, Y.Youm, H.Zokian, H.J.Tucker, T.J.

(2020) J Med Chem 63: 13796-13824

  • DOI: https://doi.org/10.1021/acs.jmedchem.0c01084
  • Primary Citation of Related Structures:  
    6XIB, 6XIC, 6XID, 6XIE, 6XIF

  • PubMed Abstract: 

    Proprotein convertase subtilisin-like/kexin type 9 (PCSK9) is a key regulator of plasma LDL-cholesterol (LDL-C) and a clinically validated target for the treatment of hypercholesterolemia and coronary artery disease. In this paper, we describe a series of novel cyclic peptides derived from an mRNA display screen which inhibit the protein-protein interaction between PCSK9 and LDLR. Using a structure-based drug design approach, we were able to modify our original screening lead 2 to optimize the potency and metabolic stability and minimize the molecular weight to provide novel bicyclic next-generation PCSK9 inhibitor peptides such as 78 . These next-generation peptides serve as a critical foundation for continued exploration of potential oral, once-a-day PCSK9 therapeutics for the treatment of cardiovascular disease.


  • Organizational Affiliation

    Discovery Pharmaceutical Sciences, Merck & Company, Inc., 2000 Galloping Hill Road, Kenilworth, New Jersey 07033, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Proprotein convertase subtilisin/kexin type 9122Homo sapiensMutation(s): 0 
Gene Names: PCSK9NARC1PSEC0052
EC: 3.4.21
UniProt & NIH Common Fund Data Resources
Find proteins for Q8NBP7 (Homo sapiens)
Explore Q8NBP7 
Go to UniProtKB:  Q8NBP7
PHAROS:  Q8NBP7
GTEx:  ENSG00000169174 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8NBP7
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Proprotein convertase subtilisin/kexin type 9308Homo sapiensMutation(s): 0 
Gene Names: PCSK9NARC1PSEC0052
EC: 3.4.21
UniProt & NIH Common Fund Data Resources
Find proteins for Q8NBP7 (Homo sapiens)
Explore Q8NBP7 
Go to UniProtKB:  Q8NBP7
PHAROS:  Q8NBP7
GTEx:  ENSG00000169174 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8NBP7
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Peptide 83C [auth I]9synthetic constructMutation(s): 0 
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  4 Unique
IDChains TypeFormula2D DiagramParent
0A1
Query on 0A1
C [auth I]L-PEPTIDE LINKINGC10 H13 N O3TYR
3WX
Query on 3WX
C [auth I]PEPTIDE-LIKEC6 H11 N O2PRO
GNC
Query on GNC
C [auth I]L-PEPTIDE LINKINGC6 H12 N2 O3GLN
OLT
Query on OLT
C [auth I]L-PEPTIDE LINKINGC5 H11 N O3THR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.188 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.33α = 90
b = 70.33β = 90
c = 164.09γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
STARANISOdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2020-11-18 
  • Deposition Author(s): Orth, P.

Revision History  (Full details and data files)

  • Version 1.0: 2020-11-18
    Type: Initial release
  • Version 1.1: 2020-12-02
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Database references, Refinement description
  • Version 1.3: 2023-11-15
    Changes: Data collection, Derived calculations
  • Version 2.0: 2024-04-24
    Changes: Atomic model, Author supporting evidence, Data collection, Database references, Derived calculations, Non-polymer description, Polymer sequence, Source and taxonomy, Structure summary
  • Version 3.0: 2024-07-10
    Changes: Data collection, Derived calculations, Non-polymer description, Structure summary