4UFG

Thrombin in complex with (2R)-2-(benzylsulfonylamino)-N-((1S)-2-((4- carbamimidoylphenyl)methylamino)-1-methyl-2-oxo-ethyl)-N-methyl-3- phenyl-propanamide ethane


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Boosting Affinity by Correct Ligand Preorganization for the S2 Pocket of Thrombin: A Study by Isothermal Titration Calorimetry, Molecular Dynamics, and High-Resolution Crystal Structures.

Ruhmann, E.H.Rupp, M.Betz, M.Heine, A.Klebe, G.

(2016) ChemMedChem 11: 309

  • DOI: 10.1002/cmdc.201500531
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Structural preorganization to fix bioactive conformations at protein binding sites is a popular strategy to enhance binding affinity during late-stage optimization. The rationale for this enhancement relates to entropic advantages assigned to rigidif ...

    Structural preorganization to fix bioactive conformations at protein binding sites is a popular strategy to enhance binding affinity during late-stage optimization. The rationale for this enhancement relates to entropic advantages assigned to rigidified versus flexible ligands. We analyzed a narrow series of peptidomimetics binding to thrombin. The individual ligands exhibit at P2 a conformationally flexible glycine, more restricted alanine, N-methylglycine, N-methylhomoalanine, and largely rigidified proline moiety. Overall, affinity was found to increase by a factor of 1000, explained partly by an entropic advantage. All ligands adopt the same binding mode with small deviations. The residual mobility of the bound ligands is decreased across the series, and a protein side chain differs in its order/disorder behavior along with changes in the surface-water network pattern established across the newly generated protein-ligand surfaces. The enthalpy/entropy inventory displays a rather complex picture and emphasizes that thermodynamics can only be compared in terms of relative differences within a structurally similar ligand series.


    Organizational Affiliation

    Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6, 35037, Marburg, Germany. klebe@mailer.uni-marburg.de.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
THROMBIN HEAVY CHAIN
H
258Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HIRUDIN VARIANT-2
I
12Hirudo medicinalisMutation(s): 0 
Find proteins for P09945 (Hirudo medicinalis)
Go to UniProtKB:  P09945

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
THROMBIN LIGHT CHAIN
L
29Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
D6J
Query on D6J

Download CCD File 
H
(2S)-N-[(4-carbamimidoylphenyl)methyl]-2-[methyl-[(2R)-3-phenyl-2-[(phenylmethyl)sulfonylamino]propanoyl]amino]butanamide
C29 H35 N5 O4 S
OVCZZMWCFCLIPI-FTJBHMTQSA-N
 Ligand Interaction
NAG
Query on NAG

Download CCD File 
H
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
PO4
Query on PO4

Download CCD File 
H
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
NA
Query on NA

Download CCD File 
H
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TYS
Query on TYS
IL-PEPTIDE LINKINGC9 H11 N O6 STYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.163 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.092α = 90
b = 71.249β = 100.53
c = 72.587γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-01-27
    Type: Initial release
  • Version 1.1: 2016-03-02
    Changes: Database references