5JG0

Staphylococcus aureus Dihydrofolate Reductase complexed with beta-NADPH and UCP1191


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.879 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

MRSA Isolates from United States Hospitals Carry dfrG and dfrK Resistance Genes and Succumb to Propargyl-Linked Antifolates.

Reeve, S.M.Scocchera, E.W.G-Dayanadan, N.Keshipeddy, S.Krucinska, J.Hajian, B.Ferreira, J.Nailor, M.Aeschlimann, J.Wright, D.L.Anderson, A.C.

(2016) Cell Chem Biol 23: 1458-1467

  • DOI: 10.1016/j.chembiol.2016.11.007

  • PubMed Abstract: 
  • Antibiotic resistance is a rapidly evolving health concern that requires a sustained effort to understand mechanisms of resistance and to develop new agents that overcome those mechanisms. The dihydrofolate reductase (DHFR) inhibitor, trimethoprim (T ...

    Antibiotic resistance is a rapidly evolving health concern that requires a sustained effort to understand mechanisms of resistance and to develop new agents that overcome those mechanisms. The dihydrofolate reductase (DHFR) inhibitor, trimethoprim (TMP), remains one of the most important orally administered antibiotics. However, resistance through chromosomal mutations and mobile, plasmid-encoded insensitive DHFRs threatens the continued use of this agent. We are pursuing the development of new propargyl-linked antifolate (PLA) DHFR inhibitors designed to evade these mechanisms. While analyzing contemporary TMP-resistant clinical isolates of methicillin-resistant and sensitive Staphylococcus aureus, we discovered two mobile resistance elements, dfrG and dfrK. This is the first identification of these resistance mechanisms in the United States. These resistant organisms were isolated from a variety of infection sites, show clonal diversity, and each contain distinct resistance genotypes for common antibiotics. Several PLAs showed significant activity against these resistant strains by direct inhibition of the TMP resistance elements.


    Organizational Affiliation

    Department of Pharmaceutical Sciences, University of Connecticut, 69 North Eagleville Road, Storrs, CT 06269, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dihydrofolate reductase
X
157Staphylococcus aureusMutation(s): 0 
Gene Names: folA
EC: 1.5.1.3
Find proteins for P0A017 (Staphylococcus aureus)
Go to UniProtKB:  P0A017
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download SDF File 
Download CCD File 
X
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
UC9
Query on UC9

Download SDF File 
Download CCD File 
X
4-{6-[(2S)-4-(2,4-diamino-6-ethylpyrimidin-5-yl)but-3-yn-2-yl]-2H-1,3-benzodioxol-4-yl}benzoic acid
C24 H22 N4 O4
NQHZOWBSMCFILX-CYBMUJFWSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.879 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 78.875α = 90.00
b = 78.875β = 90.00
c = 106.431γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI111957

Revision History 

  • Version 1.0: 2017-04-19
    Type: Initial release
  • Version 1.1: 2017-09-20
    Type: Author supporting evidence