2AB2

Mineralocorticoid Receptor Double Mutant with Bound Spironolactone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A Ligand-mediated Hydrogen Bond Network Required for the Activation of the Mineralocorticoid Receptor

Bledsoe, R.K.Madauss, K.P.Holt, J.A.Apolito, C.J.Lambert, M.H.Pearce, K.H.Stanley, T.B.Stewart, E.L.Trump, R.P.Willson, T.M.Williams, S.P.

(2005) J Biol Chem 280: 31283-31293

  • DOI: 10.1074/jbc.M504098200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Ligand binding is the first step in hormone regulation of mineralocorticoid receptor (MR) activity. Here, we report multiple crystal structures of MR (NR3C2) bound to both agonist and antagonists. These structures combined with mutagenesis studies re ...

    Ligand binding is the first step in hormone regulation of mineralocorticoid receptor (MR) activity. Here, we report multiple crystal structures of MR (NR3C2) bound to both agonist and antagonists. These structures combined with mutagenesis studies reveal that maximal receptor activation involves an intricate ligand-mediated hydrogen bond network with Asn770 which serves dual roles: stabilization of the loop preceding the C-terminal activation function-2 helix and direct contact with the hormone ligand. In addition, most activating ligands hydrogen bond to Thr945 on helix 10. Structural characterization of the naturally occurring S810L mutant explains how stabilization of a helix 3/helix 5 interaction can circumvent the requirement for this hydrogen bond network. Taken together, these results explain the potency of MR activation by aldosterone, the weak activation induced by progesterone and the antihypertensive agent spironolactone, and the binding selectivity of cortisol over cortisone.


    Organizational Affiliation

    Department of Gene Expression and Protein Biochemistry, GlaxoSmithKline, Research Triangle Park, North Carolina 27709, USA. randy.k.bledsoe@gsk.com



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mineralocorticoid receptor
A, B
275Homo sapiensMutation(s): 2 
Gene Names: NR3C2MCRMLR
Find proteins for P08235 (Homo sapiens)
Go to UniProtKB:  P08235
NIH Common Fund Data Resources
PHAROS  P08235
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SNL
Query on SNL

Download CCD File 
A, B
SPIRONOLACTONE
C24 H32 O4 S
LXMSZDCAJNLERA-ZHYRCANASA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
SNLIC50:  1.600000023841858   nM  BindingDB
SNLIC50:  49   nM  BindingDB
SNLIC50:  13   nM  BindingDB
SNLIC50:  60   nM  BindingDB
SNLKi:  2.319999933242798   nM  BindingDB
SNLIC50:  11   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.194α = 90
b = 89.939β = 90
c = 171.876γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-07-26
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description