6VV8

Mycobacterium tuberculosis dihydrofolate reductase in complex with JEB285


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report

Currently 6VV8 does not have a validation slider image.


This is version 1.2 of the entry. See complete history


Literature

Using a Fragment-Based Approach to Identify Alternative Chemical Scaffolds Targeting Dihydrofolate Reductase fromMycobacterium tuberculosis.

Ribeiro, J.A.Hammer, A.Libreros-Zuniga, G.A.Chavez-Pacheco, S.M.Tyrakis, P.de Oliveira, G.S.Kirkman, T.El Bakali, J.Rocco, S.A.Sforca, M.L.Parise-Filho, R.Coyne, A.G.Blundell, T.L.Abell, C.Dias, M.V.B.

(2020) ACS Infect Dis 6: 2192-2201

  • DOI: https://doi.org/10.1021/acsinfecdis.0c00263
  • Primary Citation of Related Structures:  
    6VS5, 6VS6, 6VS8, 6VS9, 6VSD, 6VSE, 6VSF, 6VSG, 6VV6, 6VV7, 6VV8, 6VV9, 6VVB

  • PubMed Abstract: 

    Dihydrofolate reductase (DHFR), a key enzyme involved in folate metabolism, is a widely explored target in the treatment of cancer, immune diseases, bacteria, and protozoa infections. Although several antifolates have proved successful in the treatment of infectious diseases, they have been underexplored to combat tuberculosis, despite the essentiality of M. tuberculosis DHFR (MtDHFR). Herein, we describe an integrated fragment-based drug discovery approach to target MtDHFR that has identified hits with scaffolds not yet explored in any previous drug design campaign for this enzyme. The application of a SAR by catalog strategy of an in house library for one of the identified fragments has led to a series of molecules that bind to MtDHFR with low micromolar affinities. Crystal structures of MtDHFR in complex with compounds of this series demonstrated a novel binding mode that considerably differs from other DHFR antifolates, thus opening perspectives for the development of relevant MtDHFR inhibitors.


  • Organizational Affiliation

    Department of Microbiology, Institute of Biomedical Science, University of São Paulo, Av. Prof. Lineu Prestes, 1474, São Paulo, SP 05508-000, Brazil.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dihydrofolate reductase
A, B
161Mycobacterium tuberculosis H37RaMutation(s): 0 
Gene Names: dfrAMRA_2788
EC: 1.5.1.3
UniProt
Find proteins for A5U6B6 (Mycobacterium tuberculosis (strain ATCC 25177 / H37Ra))
Explore A5U6B6 
Go to UniProtKB:  A5U6B6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA5U6B6
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.173α = 90
b = 71.492β = 90
c = 72.214γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report

Currently 6VV8 does not have a validation slider image.



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Sao Paulo Research Foundation (FAPESP)Brazil2018/00351-1

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-15
    Type: Initial release
  • Version 1.1: 2020-08-26
    Changes: Database references, Derived calculations
  • Version 1.2: 2023-10-11
    Changes: Data collection, Database references, Refinement description