5AJR

Sterol 14-alpha demethylase (CYP51) from Trypanosoma cruzi in complex with the 1-tetrazole derivative VT-1161 ((R)-2-(2,4-Difluorophenyl)-1, 1-difluoro-3-(1H-tetrazol-1-yl)-1-(5-(4-(2,2,2-trifluoroethoxy)phenyl) pyridin-2-yl)propan-2-ol)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.266 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Clinical Candidate Vt-1161'S Antiparasitic Effect in Vitro, Activity in a Murine Model of Chagas Disease, and Structural Characterization in Complex with the Target Enzyme Cyp51 from Trypanosoma Cruzi.

Hoekstra, W.J.Hargrove, T.Y.Wawrzak, Z.Da Gama Jaen Batista, D.Da Silva, C.F.Nefertiti, A.S.G.Rachakonda, G.Schotzinger, R.J.Villalta, F.Soeiro, M.D.N.C.Lepesheva, G.I.

(2015) Antimicrob.Agents Chemother. 60: 1058

  • DOI: 10.1128/AAC.02287-15

  • PubMed Abstract: 
  • A novel antifungal drug candidate, the 1-tetrazole-based agent VT-1161 [(R)-2-(2,4-difluorophenyl)-1,1-difluoro-3-(1H-tetrazol-1-yl)-1-{5-[4-(2,2,2-trifluoroethoxy)phenyl]pyridin-2-yl}propan-2-ol], which is currently in two phase 2b antifungal clinic ...

    A novel antifungal drug candidate, the 1-tetrazole-based agent VT-1161 [(R)-2-(2,4-difluorophenyl)-1,1-difluoro-3-(1H-tetrazol-1-yl)-1-{5-[4-(2,2,2-trifluoroethoxy)phenyl]pyridin-2-yl}propan-2-ol], which is currently in two phase 2b antifungal clinical trials, was found to be a tight-binding ligand (apparent dissociation constant [Kd], 24 nM) and a potent inhibitor of cytochrome P450 sterol 14α-demethylase (CYP51) from the protozoan pathogen Trypanosoma cruzi. Moreover, VT-1161 revealed a high level of antiparasitic activity against amastigotes of the Tulahuen strain of T. cruzi in cellular experiments (50% effective concentration, 2.5 nM) and was active in vivo, causing >99.8% suppression of peak parasitemia in a mouse model of infection with the naturally drug-resistant Y strain of the parasite. The data strongly support the potential utility of VT-1161 in the treatment of Chagas disease. The structural characterization of T. cruzi CYP51 in complex with VT-1161 provides insights into the molecular basis for the compound's inhibitory potency and paves the way for the further rational development of this novel, tetrazole-based inhibitory chemotype both for antiprotozoan chemotherapy and for antifungal chemotherapy.


    Organizational Affiliation

    Viamet Pharmaceuticals, Inc., Durham, North Carolina, USA.,Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA Center for Structural Biology, Vanderbilt University, Nashville, Tennessee, USA galina.i.lepesheva@vanderbilt.edu.,Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Synchrotron Research Center, Life Science Collaborative Access Team, Northwestern University, Argonne, Illinois, USA.,Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.,Department of Microbiology and Immunology, Meharry Medical College, Nashville, Tennessee, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
STEROL 14-ALPHA DEMETHYLASE
A
460Trypanosoma cruzi (strain CL Brener)Mutation(s): 0 
Gene Names: CYP51
EC: 1.14.14.154
Find proteins for Q7Z1V1 (Trypanosoma cruzi (strain CL Brener))
Go to UniProtKB:  Q7Z1V1
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
VT1
Query on VT1

Download SDF File 
Download CCD File 
A
(R)-2-(2,4-Difluorophenyl)-1,1-difluoro-3-(1H-tetrazol-1-yl)-1-(5-(4-(2,2,2-trifluoroethoxy)phenyl)pyridin-2-yl)propan-2-ol
C23 H16 F7 N5 O2
IDUYJRXRDSPPRC-NRFANRHFSA-N
 Ligand Interaction
HEM
Query on HEM

Download SDF File 
Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.266 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 63.060α = 90.00
b = 63.060β = 90.00
c = 221.750γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-12-02
    Type: Initial release
  • Version 1.1: 2015-12-23
    Type: Database references, Structure summary
  • Version 1.2: 2016-02-10
    Type: Database references