5N34

Thermolysin in complex with inhibitor JC276


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.22 Å
  • R-Value Free: 0.130 
  • R-Value Work: 0.110 
  • R-Value Observed: 0.111 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Paying the Price of Desolvation in Solvent-Exposed Protein Pockets: Impact of Distal Solubilizing Groups on Affinity and Binding Thermodynamics in a Series of Thermolysin Inhibitors.

Cramer, J.Krimmer, S.G.Heine, A.Klebe, G.

(2017) J Med Chem 60: 5791-5799

  • DOI: https://doi.org/10.1021/acs.jmedchem.7b00490
  • Primary Citation of Related Structures:  
    5MNR, 5N2T, 5N2X, 5N2Z, 5N31, 5N34, 5N3V, 5N3Y

  • PubMed Abstract: 

    In lead optimization, open, solvent-exposed protein pockets are often disregarded as prospective binding sites. Because of bulk-solvent proximity, researchers are instead enticed to attach charged polar groups at inhibitor scaffolds to improve solubility and pharmacokinetic properties. It is rarely considered that solvent effects from water reorganization in the first hydration shell of protein-ligand complexes can have a significant impact on binding. We investigate the thermodynamic fingerprint of thermolysin inhibitors featuring terminal charged ammonium groups that are gradually pulled from a distal, solvent-exposed position into the flat, bowl-shaped S 2 ' pocket. Even for the most remote attachment, costs for partial desolvation of the polar group next to the protein-solvent interface are difficult to compensate by interactions with the protein or surrounding water molecules. Through direct comparison with hydrophobic analogues, a significant 180-fold affinity loss was recorded, which questions popular strategies to attach polar ligand-solubilizing groups at the exposed terminus of substituents accommodated in flat open pockets.


  • Organizational Affiliation

    Institute of Pharmaceutical Chemistry, University of Marburg , Marbacher Weg 6, 35032 Marburg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ThermolysinA [auth E]316Bacillus thermoproteolyticusMutation(s): 0 
EC: 3.4.24.27
UniProt
Find proteins for P00800 (Bacillus thermoproteolyticus)
Explore P00800 
Go to UniProtKB:  P00800
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00800
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
8JQ
Query on 8JQ

Download Ideal Coordinates CCD File 
M [auth E]~{N}-[(2~{S})-1-(2-azanylethylamino)-4-methyl-1-oxidanylidene-pentan-2-yl]-(phenylmethoxycarbonylaminomethyl)phosphonamidic acid
C17 H29 N4 O5 P
PVGHXKGUTYHASF-HNNXBMFYSA-N
MPD
Query on MPD

Download Ideal Coordinates CCD File 
K [auth E],
L [auth E]
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
DMS
Query on DMS

Download Ideal Coordinates CCD File 
G [auth E],
H [auth E],
I [auth E],
J [auth E]
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth E]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth E],
D [auth E],
E,
F [auth E]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.22 Å
  • R-Value Free: 0.130 
  • R-Value Work: 0.110 
  • R-Value Observed: 0.111 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.529α = 90
b = 92.529β = 90
c = 129.916γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Cootmodel building
PHASERphasing
XDSdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-21
    Type: Initial release
  • Version 1.1: 2017-07-26
    Changes: Database references
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Derived calculations, Refinement description