4ELG

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 

wwPDB Validation 3D Report Full Report



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:  
    4ELE, 4ELF, 4ELG, 4ELH, 4ELB

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dihydrofolate reductaseA, B, C, D, E, F, G, H166Bacillus anthracis str. SterneMutation(s): 0 
Gene Names: BAS2083BA_2237dfrADHFRGBAA_2237
EC: 1.5.1.3
Find proteins for Q81R22 (Bacillus anthracis)
Explore Q81R22 
Go to UniProtKB:  Q81R22
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
52J
Query on 52J

Download CCD File 
A, B, C, D, E, F, G, H
(2E)-3-{5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenyl}-1-[(1S)-1-(2-methylpropyl)phthalazin-2(1H)-yl]prop-2-en-1-one
C28 H32 N6 O3
ZISYTWICFLBNJQ-ZUTVHTERSA-N
 Ligand Interaction
52I
Query on 52I

Download CCD File 
B, G
(2E)-3-{5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenyl}-1-[(1R)-1-(2-methylpropyl)phthalazin-2(1H)-yl]prop-2 -en-1-one
C28 H32 N6 O3
ZISYTWICFLBNJQ-JJNABOQBSA-N
 Ligand Interaction
CA
Query on CA

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

Download CCD File 
A, B, C, D, E, F, G, H
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
52JKi:  6.900000095367432   nM  Binding MOAD
52IKi:  6.900000095367432   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.151α = 90
b = 135.655β = 90
c = 168.324γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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