6GBW

Thrombin in complex with MI2100 ((S)-N-(2-(aminomethyl)-5-chlorobenzyl)-1-((benzylsulfonyl)-L-arginyl)pyrrolidine-2-carboxamide)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.132 
  • R-Value Observed: 0.134 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Strategies for Late-Stage Optimization: Profiling Thermodynamics by Preorganization and Salt Bridge Shielding.

Sandner, A.Hufner-Wulsdorf, T.Heine, A.Steinmetzer, T.Klebe, G.

(2019) J Med Chem 62: 9753-9771

  • DOI: 10.1021/acs.jmedchem.9b01196
  • Primary Citation of Related Structures:  
    5JFD, 5JZY, 5LCE, 5LPD, 6GBW, 6ROT

  • PubMed Abstract: 
  • Structural fixation of a ligand in its bioactive conformation may, due to entropic reasons, improve affinity. We present a congeneric series of thrombin ligands with a variety of functional groups triggering preorganization prior to binding. Fixation in solution and complex formation have been characterized by crystallography, isothermal titration calorimetry (ITC), and molecular dynamics (MD) simulations ...

    Structural fixation of a ligand in its bioactive conformation may, due to entropic reasons, improve affinity. We present a congeneric series of thrombin ligands with a variety of functional groups triggering preorganization prior to binding. Fixation in solution and complex formation have been characterized by crystallography, isothermal titration calorimetry (ITC), and molecular dynamics (MD) simulations. First, we show why these preorganizing modifications do not affect the overall binding mode and how key interactions are preserved. Next, we demonstrate how preorganization thermodynamics can be largely dominated by enthalpy rather than entropy because of the significant population of low-energy conformations. Furthermore, a salt bridge is shielded by actively reducing its surface exposure, thus leading to an enhanced enthalpic binding profile. Our results suggest that the consideration of the ligand solution ensemble by MD simulation is necessary to predict preorganizing modifications that enhance the binding behavior of already promising binders.


    Organizational Affiliation

    Institut für Pharmazeutische Chemie , Philipps-Universität Marburg , Marbacher Weg 6 , 35032 Marburg , Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ProthrombinA [auth L]36Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
UniProt & NIH Common Fund Data Resources
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
PHAROS:  P00734
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ProthrombinB [auth H]259Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
UniProt & NIH Common Fund Data Resources
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
PHAROS:  P00734
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Hirudin variant-2C [auth I]12Hirudo medicinalisMutation(s): 0 
UniProt
Find proteins for P09945 (Hirudo medicinalis)
Explore P09945 
Go to UniProtKB:  P09945
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EU5 (Subject of Investigation/LOI)
Query on EU5

Download Ideal Coordinates CCD File 
I [auth H](2~{S})-~{N}-[[2-(aminomethyl)-5-chloranyl-phenyl]methyl]-1-[(2~{S})-5-carbamimidamido-2-[(phenylmethyl)sulfonylamino]pentanoyl]pyrrolidine-2-carboxamide
C26 H36 Cl N7 O4 S
MWLLGEVAEDIFRC-GOTSBHOMSA-N
 Ligand Interaction
NAG (Subject of Investigation/LOI)
Query on NAG

Download Ideal Coordinates CCD File 
D [auth H]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
DMS
Query on DMS

Download Ideal Coordinates CCD File 
G [auth H], HDIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
E [auth H], F [auth H]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TYS
Query on TYS
C [auth I]L-PEPTIDE LINKINGC9 H11 N O6 STYR
Binding Affinity Annotations 
IDSourceBinding Affinity
EU5 Binding MOAD:  6GBW Ki: 3.51 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.132 
  • R-Value Observed: 0.134 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.84α = 90
b = 71.119β = 100.58
c = 72.858γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Cootmodel building
XDSdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-04-24
    Type: Initial release
  • Version 1.1: 2019-11-27
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary