6DDS

Mycobacterium tuberculosis Dihydrofolate Reductase complexed with beta-NADPH and 4-[3-[3-[2,4-bis(azanyl)-6-ethyl-pyrimidin-5-yl]prop-2-ynyl]-5-methoxy-phenyl]benzoic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.72 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Drugging the Folate Pathway in Mycobacterium tuberculosis: The Role of Multi-targeting Agents.

Hajian, B.Scocchera, E.Shoen, C.Krucinska, J.Viswanathan, K.G-Dayanandan, N.Erlandsen, H.Estrada, A.Mikusova, K.Kordulakova, J.Cynamon, M.Wright, D.

(2019) Cell Chem Biol 26: 781-791.e6

  • DOI: 10.1016/j.chembiol.2019.02.013
  • Primary Citation of Related Structures:  
    6DDP, 6DDS, 6DE4, 6DE5, 6DDW

  • PubMed Abstract: 
  • The folate biosynthetic pathway offers many druggable targets that have yet to be exploited in tuberculosis therapy. Herein, we have identified a series of small molecules that interrupt Mycobacterium tuberculosis (Mtb) folate metabolism by dual targeting of dihydrofolate reductase (DHFR), a key enzyme in the folate pathway, and its functional analog, Rv2671 ...

    The folate biosynthetic pathway offers many druggable targets that have yet to be exploited in tuberculosis therapy. Herein, we have identified a series of small molecules that interrupt Mycobacterium tuberculosis (Mtb) folate metabolism by dual targeting of dihydrofolate reductase (DHFR), a key enzyme in the folate pathway, and its functional analog, Rv2671. We have also compared the antifolate activity of these compounds with that of para-aminosalicylic acid (PAS). We found that the bioactive metabolite of PAS, in addition to previously reported activity against DHFR, inhibits flavin-dependent thymidylate synthase in Mtb, suggesting a multi-targeted mechanism of action for this drug. Finally, we have shown that antifolate treatment in Mtb decreases the production of mycolic acids, most likely due to perturbation of the activated methyl cycle. We conclude that multi-targeting of the folate pathway in Mtb is associated with highly potent anti-mycobacterial activity.


    Organizational Affiliation

    Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA. Electronic address: dennis.wright@uconn.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dihydrofolate reductaseA, B, C, D159Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: folAdfrARv2763cMTV002.28c
EC: 1.5.1.3
UniProt
Find proteins for P9WNX1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WNX1 
Go to UniProtKB:  P9WNX1
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDP (Subject of Investigation/LOI)
Query on NDP

Download Ideal Coordinates CCD File 
E [auth A], I [auth B], L [auth C], P [auth D]NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
U75 (Subject of Investigation/LOI)
Query on U75

Download Ideal Coordinates CCD File 
F [auth A], J [auth B], M [auth C], Q [auth D]4-[3-[3-[2,4-bis(azanyl)-6-ethyl-pyrimidin-5-yl]prop-2-ynyl]-5-methoxy-phenyl]benzoic acid
C23 H22 N4 O3
VLQRVOAJCWFFQG-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
K [auth B], N [auth C], O [auth C], R [auth D], S [auth D]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
G [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
H [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.72 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.204α = 90.15
b = 60.804β = 89.94
c = 60.723γ = 90.02
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI104841

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-23
    Type: Initial release
  • Version 1.1: 2019-07-10
    Changes: Data collection, Database references
  • Version 1.2: 2019-12-18
    Changes: Author supporting evidence