4CYU

Staphylococcus aureus 7,8-Dihydro-6-hydroxymethylpterin- pyrophosphokinase in complex with AMPCPP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structure-Based Design and Development of Functionalized Mercaptoguanine Derivatives as Inhibitors of the Folate Biosynthesis Pathway Enzyme 6-Hydroxymethyl-7,8-Dihydropterin Pyrophosphokinase from Staphylococcus Aureus.

Dennis, M.L.Chhabra, S.Wang, Z.Debono, A.Dolezal, O.Newman, J.Pitcher, N.P.Rahmani, R.Cleary, B.Barlow, N.Hattarki, M.Graham, B.Peat, T.S.Baell, J.B.Swarbrick, J.D.

(2014) J Med Chem 57: 9612

  • DOI: https://doi.org/10.1021/jm501417f
  • Primary Citation of Related Structures:  
    4CRJ, 4CWB, 4CYU

  • PubMed Abstract: 

    6-Hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK), an enzyme from the folate biosynthesis pathway, catalyzes the pyrophosphoryl transfer from ATP to 6-hydroxymethyl-7,8-dihydropterin and is a yet-to-be-drugged antimicrobial target. Building on our previous discovery that 8-mercaptoguanine (8MG) is an inhibitor of Staphylococcus aureus HPPK (SaHPPK), we have identified and characterized the binding of an S8-functionalized derivative (3). X-ray structures of both the SaHPPK/3/cofactor analogue ternary and the SaHPPK/cofactor analogue binary complexes have provided insight into cofactor recognition and key residues that move over 30 Å upon binding of 3, whereas NMR measurements reveal a partially plastic ternary complex active site. Synthesis and binding analysis of a set of analogues of 3 have identified an advanced new lead compound (11) displaying >20-fold higher affinity for SaHPPK than 8MG. A number of these exhibited low micromolar affinity for dihydropteroate synthase (DHPS), the adjacent, downstream enzyme to HPPK, and may thus represent promising new leads to bienzyme inhibitors.


  • Organizational Affiliation

    Monash Institute of Pharmaceutical Sciences, Monash University , Parkville, Victoria 3052, Australia.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
7,8-DIHYDRO-6-HYDROXYMETHYLPTERIN-PYROPHOSPHOKINASE161Staphylococcus aureusMutation(s): 0 
EC: 2.7.6.3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
7,8-DIHYDRO-6-HYDROXYMETHYLPTERIN-PYROPHOSPHOKINASE
B, C, D
161Staphylococcus aureusMutation(s): 0 
EC: 2.7.6.3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
APC
Query on APC

Download Ideal Coordinates CCD File 
G [auth A],
K [auth B],
O [auth C],
R [auth D]
DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER
C11 H18 N5 O12 P3
CAWZRIXWFRFUQB-IOSLPCCCSA-N
TRS
Query on TRS

Download Ideal Coordinates CCD File 
H [auth A],
L [auth B]
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
MG
Query on MG

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
I [auth B]
J [auth B]
M [auth C]
E [auth A],
F [auth A],
I [auth B],
J [auth B],
M [auth C],
N [auth C],
P [auth D],
Q [auth D]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.002α = 90
b = 94.263β = 112.44
c = 62.989γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-28
    Type: Initial release
  • Version 1.1: 2019-05-08
    Changes: Data collection, Experimental preparation, Other
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description