1QA0

BOVINE TRYPSIN 2-AMINOBENZIMIDAZOLE COMPLEX

  • Classification: HYDROLASE
  • Organism(s): Bos taurus
  • Mutation(s): No 

  • Deposited: 1999-04-09 Released: 2000-04-10 
  • Deposition Author(s): Whitlow, M.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Crystallographic analysis of potent and selective factor Xa inhibitors complexed to bovine trypsin.

Whitlow, M.Arnaiz, D.O.Buckman, B.O.Davey, D.D.Griedel, B.Guilford, W.J.Koovakkat, S.K.Liang, A.Mohan, R.Phillips, G.B.Seto, M.Shaw, K.J.Xu, W.Zhao, Z.Light, D.R.Morrissey, M.M.

(1999) Acta Crystallogr D Biol Crystallogr 55: 1395-1404

  • DOI: 10.1107/s0907444999007350
  • Primary Citation of Related Structures:  
    1QA0, 1QB9, 1QB6, 1QB1, 1QBO, 1QBN

  • PubMed Abstract: 
  • Factor Xa is a serine protease which activates thrombin (factor IIa) and plays a key regulatory role in the blood-coagulation cascade. Factor Xa is, therefore, an important target for the design of anti-thrombotics. Both factor Xa and thrombin share ...

    Factor Xa is a serine protease which activates thrombin (factor IIa) and plays a key regulatory role in the blood-coagulation cascade. Factor Xa is, therefore, an important target for the design of anti-thrombotics. Both factor Xa and thrombin share sequence and structural homology with trypsin. As part of a factor Xa inhibitor-design program, a number of factor Xa inhibitors were crystallographically studied complexed to bovine trypsin. The structures of one diaryl benzimidazole, one diaryl carbazole and three diaryloxypyridines are described. All five compounds bind to trypsin in an extended conformation, with an amidinoaryl group in the S1 pocket and a second basic/hydrophobic moiety bound in the S4 pocket. These binding modes all bear a resemblance to the reported binding mode of DX-9065a in bovine trypsin and human factor Xa.


    Related Citations: 
    • Crystal Structure Analysis and Refinement of Two Variants of Trigonal Trypsinogen
      Bode, W., Huber, R.
      (1978) FEBS Lett 90: 265
    • ANALYTICAL AND PRODUCTION SEEDING TECHNIQUES
      Stura, E.A., Wilson, I.A.
      (1990) Methods 1: 38

    Organizational Affiliation

    Berlex Biosciences, 15049 San Pablo Avenue, PO Box 4099, Richmond, California 94804, USA. marc_whitlow@berlex.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRYPSINA223Bos taurusMutation(s): 0 
EC: 3.4.21.4
Find proteins for P00760 (Bos taurus)
Explore P00760 
Go to UniProtKB:  P00760
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
270
Query on 270

Download CCD File 
A
2H-BENZOIMIDAZOL-2-YLAMINE
C7 H7 N3
DERVZEOWPBCBHO-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
AX7Ki:  200000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.02α = 90
b = 55.02β = 90
c = 109.14γ = 120
Software Package:
Software NamePurpose
PROFFTrefinement
XTALVIEWrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 1999-04-09 
  • Released Date: 2000-04-10 
  • Deposition Author(s): Whitlow, M.

Revision History 

  • Version 1.0: 2000-04-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2019-07-24
    Changes: Data collection, Refinement description