1BCU

ALPHA-THROMBIN COMPLEXED WITH HIRUGEN AND PROFLAVIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

X-ray and spectrophotometric studies of the binding of proflavin to the S1 specificity pocket of human alpha-thrombin.

Conti, E.Rivetti, C.Wonacott, A.Brick, P.

(1998) FEBS Lett 425: 229-233

  • DOI: 10.1016/s0014-5793(98)00235-x
  • Primary Citation of Related Structures:  
    1BCU

  • PubMed Abstract: 
  • Proflavin can be used to study the interactions of inhibitors and substrates with thrombin by monitoring the changes in the visible absorption spectrum that occur on dye displacement. We have used microspectrophotometric methods to investigate the binding of proflavin to crystals of an alpha-thrombin-hirugen complex and have determined the structure by X-ray crystallography ...

    Proflavin can be used to study the interactions of inhibitors and substrates with thrombin by monitoring the changes in the visible absorption spectrum that occur on dye displacement. We have used microspectrophotometric methods to investigate the binding of proflavin to crystals of an alpha-thrombin-hirugen complex and have determined the structure by X-ray crystallography. The proflavin molecule binds in the S1 pocket of the enzyme with one of the amino groups hydrogen bonded to the carboxylate of Asp-189 while the protonated ring nitrogen is hydrogen bonded to the carbonyl of Gly-219. This result indicates that the proflavin displacement assay can be used to specifically monitor the binding of inhibitors to the S1 pocket.


    Related Citations: 
    • Structure of the Hirugen and Hirulog 1 Complexes of Alpha-Thrombin
      Skrzypczak-Jankun, E., Carperos, V.E., Ravichandran, K.G., Tulinsky, A., Westbrook, M., Maraganore, J.M.
      (1991) J Mol Biol 221: 1379

    Organizational Affiliation

    Blackett Laboratory, Imperial College, London, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-THROMBINL36Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-THROMBINH259Homo sapiensMutation(s): 0 
Gene Names: F2
EC: 3.4.21.5
Find proteins for P00734 (Homo sapiens)
Explore P00734 
Go to UniProtKB:  P00734
NIH Common Fund Data Resources
PHAROS  P00734
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
HIRUGENI12Hirudo medicinalisMutation(s): 0 
Find proteins for P01050 (Hirudo medicinalis)
Explore P01050 
Go to UniProtKB:  P01050
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PRL
Query on PRL

Download CCD File 
H
PROFLAVIN
C13 H11 N3
WDVSHHCDHLJJJR-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TYS
Query on TYS
IL-PEPTIDE LINKINGC9 H11 N O6 STYR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PRLKd:  530000   nM  Binding MOAD
PRLKd :  530000   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.189 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.15α = 90
b = 72.25β = 100.61
c = 72.67γ = 90
Software Package:
Software NamePurpose
MADNESdata collection
CCP4data reduction
X-PLORmodel building
X-PLORrefinement
MADNESdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-14
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2018-04-18
    Changes: Data collection, Other