Structure of aldosterone synthase (CYP11B2) in complex with 5-chloro-3,3-dimethyl-2-[5-[1-(1-methylpyrazole-4-carbonyl)azetidin-3-yl]oxy-3-pyridyl]isoindolin-1-one

Experimental Data Snapshot

  • Resolution: 2.77 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.236 

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Discovery of 3-Pyridyl Isoindolin-1-one Derivatives as Potent, Selective, and Orally Active Aldosterone Synthase (CYP11B2) Inhibitors.

Liu, Y.Wu, J.Zhou, M.Chen, W.Li, D.Wang, Z.Hornsperger, B.Aebi, J.D.Marki, H.P.Kuhn, B.Wang, L.Kuglstatter, A.Benz, J.Muller, S.Hochstrasser, R.Ottaviani, G.Xin, J.Kirchner, S.Mohr, S.Verry, P.Riboulet, W.Shen, H.C.Mayweg, A.V.Amrein, K.Tan, X.

(2020) J Med Chem 63: 6876-6897

  • DOI: https://doi.org/10.1021/acs.jmedchem.0c00233
  • Primary Citation of Related Structures:  
    6XZ8, 6XZ9

  • PubMed Abstract: 

    Aldosterone synthase (CYP11B2) inhibitors have been explored in recent years as an alternative therapeutic option to mineralocorticoid receptor (MR) antagonists to reduce elevated aldosterone levels, which are associated with deleterious effects on various organ systems including the heart, vasculature, kidney, and central nervous system (CNS). A benzamide pyridine hit derived from a focused screen was successfully developed into a series of potent and selective 3-pyridyl isoindolin-1-ones CYP11B2 inhibitors. Our systematic structure-activity relationship study enabled us to identify unique structural features that result in high selectivity against the closely homologous cortisol synthase (CYP11B1). We evaluated advanced lead molecules, exemplified by compound 52 , in an in vivo cynomolgus monkey acute adrenocorticotropic hormone (ACTH) challenge model and demonstrated a superior 100-fold in vivo selectivity against CYP11B1.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome P450 11B2, mitochondrial
A, B, C
489Homo sapiensMutation(s): 0 
Gene Names: CYP11B2
EC: (PDB Primary Data), (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P19099 (Homo sapiens)
Explore P19099 
Go to UniProtKB:  P19099
PHAROS:  P19099
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP19099
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.77 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.236 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.682α = 90
b = 121.603β = 90
c = 298.702γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-24
    Type: Initial release
  • Version 1.1: 2020-07-22
    Changes: Database references