5MWP

The structure of MR in complex with AZD9977.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.212 

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Literature

Preclinical pharmacology of AZD9977: A novel mineralocorticoid receptor modulator separating organ protection from effects on electrolyte excretion.

Bamberg, K., Johansson, U., Edman, K., William-Olsson, L., Myhre, S., Gunnarsson, A., Geschwindner, S., Aagaard, A., Bjornson Granqvist, A., Jaisser, F., Huang, Y., Granberg, K.L., Jansson-Lofmark, R., Hartleib-Geschwindner, J.

(2018) PLoS One 13: e0193380-e0193380

  • DOI: 10.1371/journal.pone.0193380
  • Primary Citation of Related Structures:  
    5MWP, 5MWY

  • PubMed Abstract: 

    • Excess mineralocorticoid receptor (MR) activation promotes target organ dysfunction, vascular injury and fibrosis. MR antagonists like eplerenone are used for treating heart failure, but their use is limited due to the compound class-inherent hyperkalemia risk ...

    Excess mineralocorticoid receptor (MR) activation promotes target organ dysfunction, vascular injury and fibrosis. MR antagonists like eplerenone are used for treating heart failure, but their use is limited due to the compound class-inherent hyperkalemia risk. Here we present evidence that AZD9977, a first-in-class MR modulator shows cardio-renal protection despite a mechanism-based reduced liability to cause hyperkalemia. AZD9977 in vitro potency and binding mode to MR were characterized using reporter gene, binding, cofactor recruitment assays and X-ray crystallopgraphy. Organ protection was studied in uni-nephrectomised db/db mice and uni-nephrectomised rats administered aldosterone and high salt. Acute effects of single compound doses on urinary electrolyte excretion were tested in rats on a low salt diet. AZD9977 and eplerenone showed similar human MR in vitro potencies. Unlike eplerenone, AZD9977 is a partial MR antagonist due to its unique interaction pattern with MR, which results in a distinct recruitment of co-factor peptides when compared to eplerenone. AZD9977 dose dependently reduced albuminuria and improved kidney histopathology similar to eplerenone in db/db uni-nephrectomised mice and uni-nephrectomised rats. In acute testing, AZD9977 did not affect urinary Na+/K+ ratio, while eplerenone increased the Na+/K+ ratio dose dependently. AZD9977 is a selective MR modulator, retaining organ protection without acute effect on urinary electrolyte excretion. This predicts a reduced hyperkalemia risk and AZD9977 therefore has the potential to deliver a safe, efficacious treatment to patients prone to hyperkalemia.

    Organizational Affiliation: 

    Cardiovascular, Renal and Metabolic Diseases, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, Gothenburg, Sweden.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mineralocorticoid receptorA305Homo sapiensMutation(s): 2 
Gene Names: NR3C2, MCR, MLR
UniProt & NIH Common Fund Data Resources
Find proteins for P08235 (Homo sapiens)
Explore P08235 
Go to UniProtKB:  P08235
PHAROS:  P08235
GTEx:  ENSG00000151623 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08235
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
NCOA1 peptideB15Homo sapiensMutation(s): 0 
Gene Names: NCOA1, BHLHE74, SRC1
EC: 2.3.1.48
UniProt & NIH Common Fund Data Resources
Find proteins for Q15788 (Homo sapiens)
Explore Q15788 
Go to UniProtKB:  Q15788
PHAROS:  Q15788
GTEx:  ENSG00000084676 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15788
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ECV
Query on ECV
Download Ideal Coordinates CCD File 
C [auth A]2-[(3~{S})-7-fluoranyl-4-[(3-oxidanylidene-4~{H}-1,4-benzoxazin-6-yl)carbonyl]-2,3-dihydro-1,4-benzoxazin-3-yl]-~{N}-methyl-ethanamide
C20 H18 F N3 O5
MBKYLPOPYYLTNW-ZDUSSCGKSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
ECV BindingDB:  5MWP Ki: 40 (nM) from 1 assay(s)
IC50: min: 79, max: 3.75e+4 (nM) from 9 assay(s)
EC50: 13 (nM) from 1 assay(s)
Binding MOAD:  5MWP Ki: 31.6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.212 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.599α = 90
b = 78.12β = 90
c = 79.123γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-03-07
    Type: Initial release