4ELH

Structure-activity relationship guides enantiomeric preference among potent inhibitors of B. anthracis dihydrofolate reductase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.103 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure-activity relationship for enantiomers of potent inhibitors of B. anthracis dihydrofolate reductase.

Bourne, C.R.Wakeham, N.Nammalwar, B.Tseitin, V.Bourne, P.C.Barrow, E.W.Mylvaganam, S.Ramnarayan, K.Bunce, R.A.Berlin, K.D.Barrow, W.W.

(2013) Biochim.Biophys.Acta 1834: 46-52

  • DOI: 10.1016/j.bbapap.2012.09.001
  • Primary Citation of Related Structures:  4ELB, 4ELE, 4ELF, 4ELG

  • PubMed Abstract: 
  • Bacterial resistance to antibiotic therapies is increasing and new treatment options are badly needed. There is an overlap between these resistant bacteria and organisms classified as likely bioterror weapons. For example, Bacillus anthracis is innat ...

    Bacterial resistance to antibiotic therapies is increasing and new treatment options are badly needed. There is an overlap between these resistant bacteria and organisms classified as likely bioterror weapons. For example, Bacillus anthracis is innately resistant to the anti-folate trimethoprim due to sequence changes found in the dihydrofolate reductase enzyme. Development of new inhibitors provides an opportunity to enhance the current arsenal of anti-folate antibiotics while also expanding the coverage of the anti-folate class.


    Organizational Affiliation

    Department of Veterinary Pathobiology, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74078, USA. christina.bourne@okstate.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dihydrofolate reductase
A, H, C, B, G, F, D, E
166Bacillus anthracisGene Names: dfrA (dfrD)
EC: 1.5.1.3
Find proteins for Q81R22 (Bacillus anthracis)
Go to UniProtKB:  Q81R22
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
53I
Query on 53I

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
(2E)-3-{5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenyl}-1-[(1R)-1-(2-methylprop-1-en-1-yl)phthalazin-2(1H)-yl]prop-2-en-1-one
(R,E)-3-(5-((2,4-diaminopyrimidin-5-yl)methyl)-2,3-dimethoxyphenyl)-1-(1-(2-methylprop-1-en-1-yl)phthalazin-2(1H)-yl)prop-2-en-1-one
C28 H30 N6 O3
LEKSMFBSZBQJBZ-JJNABOQBSA-N
 Ligand Interaction
53J
Query on 53J

Download SDF File 
Download CCD File 
D
(2E)-3-{5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenyl}-1-[(1S)-1-(2-methylprop-1-en-1-yl)phthalazin-2(1H)-yl]prop-2-en-1-one
(S,E)-3-(5-((2,4-diaminopyrimidin-5-yl)methyl)-2,3-dimethoxyphenyl)-1-(1-(2-methylprop-1-en-1-yl)phthalazin-2(1H)-yl)prop-2-en-1-one
C28 H30 N6 O3
LEKSMFBSZBQJBZ-ZUTVHTERSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
53IKi: 8.2 nM BINDINGMOAD
53JKi: 8.2 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.103 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 68.350α = 90.00
b = 136.034β = 90.00
c = 168.360γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-13
    Type: Initial release