1V3X

Factor Xa in complex with the inhibitor 1-[6-methyl-4,5,6,7-tetrahydrothiazolo(5,4-c)pyridin-2-yl] carbonyl-2-carbamoyl-4-(6-chloronaphth-2-ylsulphonyl)piperazine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Synthesis and conformational analysis of a non-amidine factor Xa inhibitor that incorporates 5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine as S4 binding element

Haginoya, N.Kobayashi, S.Komoriya, S.Yoshino, T.Suzuki, M.Shimada, T.Watanabe, K.Hirokawa, Y.Furugori, T.Nagahara, T.

(2004) J.Med.Chem. 47: 5167-5182

  • DOI: 10.1021/jm049884d
  • Also Cited By: 2D1J

  • PubMed Abstract: 
  • Our exploratory study was based on the concept that a non-amidine factor Xa (fXa) inhibitor is suitable for an orally available anticoagulant. We synthesized and evaluated a series of N-(6-chloronaphthalen-2-yl)sulfonylpiperazine derivatives incorpor ...

    Our exploratory study was based on the concept that a non-amidine factor Xa (fXa) inhibitor is suitable for an orally available anticoagulant. We synthesized and evaluated a series of N-(6-chloronaphthalen-2-yl)sulfonylpiperazine derivatives incorporating various fused-bicyclic rings containing an aliphatic amine expected to be S4 binding element. Among this series, 5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine type 61 displayed orally potent anti-fXa activity and evident prolongation of prothrombin time (PT) with the moderate bioavailability in rats. The X-ray crystal analysis afforded an obvious binding mode that 5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine and 6-chloronaphthalene respectively bound to S4 and S1 subsites. In this X-ray study, we discovered a novel intramolecular S-O close contact. Ab initio energy calculations of model compounds deduced that conformers with the most close S-O proximity were most stable. The Mulliken population analysis proposed that this energy profile was caused by both of electrostatic S-O affinity and N-O repulsion. The results of these calculations and X-ray analysis suggested a possibility that the restricted conformation effected the affinity to S4 subsite of fXa.


    Related Citations: 
    • Structural basis for chemical inhibition of human blood coagulation factor Xa
      Kamata, K.,Kawamoto, H.,Honma, T.,Iwama, T.,Kim, S.H.
      (1998) Proc.Natl.Acad.Sci.Usa 95: 6630
    • X-ray structure of active site-inhibited clotting factor Xa. Implications for drug design and substrate recognition
      Brandstetter, H.,Kuhne, A.,Bode, W.,Huber, R.,von der Saal, W.,Wirthensohn, K.,Engh, R.A.
      (1996) J.Biol.Chem. 271: 29988
    • Structure of human des(1-45) factor Xa at 2.2 A resolution
      Padmanabhan, K.,Padmanabhan, K.P.,Tulinsky, A.,Park, C.H.,Bode, W.,Huber, R.,Blankenship, D.T.,Cardin, A.D.,Kisiel, W.
      (1993) J.Mol.Biol. 232: 947


    Organizational Affiliation

    Medicinal Chemistry Research Laboratory, Discovery Research Laboratory, Drug Metabolism & Physicochemical Property Research Laboratory, Daiichi Pharmaceutical Co. Ltd, 1-16-13, Kita-Kasai, Edogawa-ku, Tokyo 134-8630, Japan. hagin9kg@daiichipharm.co.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor X, HEAVY CHAIN
A
233Homo sapiensMutation(s): 0 
Gene Names: F10
EC: 3.4.21.6
Find proteins for P00742 (Homo sapiens)
Go to Gene View: F10
Go to UniProtKB:  P00742
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor X, LIGHT CHAIN
B
52Homo sapiensMutation(s): 0 
Gene Names: F10
EC: 3.4.21.6
Find proteins for P00742 (Homo sapiens)
Go to Gene View: F10
Go to UniProtKB:  P00742
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
D76
Query on D76

Download SDF File 
Download CCD File 
A
(2R)-4-[(6-CHLORO-2-NAPHTHYL)SULFONYL]-1-[(5-METHYL-4,5,6,7-TETRAHYDRO[1,3]THIAZOLO[5,4-C]PYRIDIN-2-YL)CARBONYL]PIPERAZINE-2-CARBOXAMIDE
1-[6-METHYL-4,5,6,7-TETRAHYDROTHIAZOLO(5,4-C)PYRIDIN-2-YL] CARBONYL-2-CARBAMOYL-4-(6-CHLORONAPHTH-2-YLSULPHONYL)PIPERAZINE
C23 H24 Cl N5 O4 S2
OVHHNKPYYVQCLN-LJQANCHMSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
D76IC50: 24 nM (100) BINDINGDB
D76IC50: 24 nM BINDINGMOAD
D76IC50: 24 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.192 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 56.050α = 90.00
b = 71.927β = 90.00
c = 78.799γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
CCP4data scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2003-11-07 
  • Released Date: 2004-11-07 
  • Deposition Author(s): Suzuki, M.

Revision History 

  • Version 1.0: 2004-11-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance