6ROT

Thrombin in complex with MI2105


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.34 Å
  • R-Value Free: 0.157 
  • R-Value Work: 0.137 
  • R-Value Observed: 0.138 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.3 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: https://doi.org/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. 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)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ProthrombinA [auth L]36Homo sapiensMutation(s): 0 
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
GTEx:  ENSG00000180210 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00734
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
ProthrombinB [auth H]253Homo sapiensMutation(s): 0 
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
GTEx:  ENSG00000180210 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00734
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P00734-1
Sequence Annotations
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Hirudin variant-2C [auth A]12Hirudo medicinalisMutation(s): 0 
UniProt
Find proteins for P09945 (Hirudo medicinalis)
Explore P09945 
Go to UniProtKB:  P09945
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09945
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
KDQ (Subject of Investigation/LOI)
Query on KDQ

Download Ideal Coordinates CCD File 
D [auth H](2~{S})-~{N}-[[5-chloranyl-2-(hydroxymethyl)phenyl]methyl]-1-[2-[(phenylmethyl)sulfonylamino]ethanoyl]pyrrolidine-2-carboxamide
C22 H26 Cl N3 O5 S
ZWZCPMJCUATTCO-FQEVSTJZSA-N
NAG
Query on NAG

Download Ideal Coordinates CCD File 
E [auth H]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
PO4
Query on PO4

Download Ideal Coordinates CCD File 
F [auth H]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
DMS
Query on DMS

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

Download Ideal Coordinates CCD File 
H,
I [auth H]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TYS
Query on TYS
C [auth A]L-PEPTIDE LINKINGC9 H11 N O6 STYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.34 Å
  • R-Value Free: 0.157 
  • R-Value Work: 0.137 
  • R-Value Observed: 0.138 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.926α = 90
b = 71.177β = 100.72
c = 73.006γ = 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: 2019-11-27
    Type: Initial release
  • Version 1.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Refinement description, Structure summary
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 1.3: 2024-11-20
    Changes: Structure summary