2VTD

Crystal structure of MurD ligase in complex with D-Glu containing sulfonamide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Novel naphthalene-N-sulfonyl-D-glutamic acid derivatives as inhibitors of MurD, a key peptidoglycan biosynthesis enzyme.

Humljan, J.Kotnik, M.Contreras-Martel, C.Blanot, D.Urleb, U.Dessen, A.Solmajer, T.Gobec, S.

(2008) J Med Chem 51: 7486-7494

  • DOI: 10.1021/jm800762u
  • Primary Citation of Related Structures:  
    2VTD, 2VTE, 2UUO, 2UUP

  • PubMed Abstract: 
  • Mur ligases have essential roles in the biosynthesis of peptidoglycan, and they represent attractive targets for the design of novel antibacterials. MurD (UDP-N-acetylmuramoyl-L-alanine:D-glutamate ligase) is the second enzyme in the series of Mur ligases, and it catalyzes the addition of D-glutamic acid (D-Glu) to the cytoplasmic intermediate UDP-N-acetylmuramoyl-L-alanine (UMA) ...

    Mur ligases have essential roles in the biosynthesis of peptidoglycan, and they represent attractive targets for the design of novel antibacterials. MurD (UDP-N-acetylmuramoyl-L-alanine:D-glutamate ligase) is the second enzyme in the series of Mur ligases, and it catalyzes the addition of D-glutamic acid (D-Glu) to the cytoplasmic intermediate UDP-N-acetylmuramoyl-L-alanine (UMA). Because of the high binding affinity of D-Glu toward MurD, we synthesized and biochemically evaluated a series of N-substituted D-Glu derivatives as potential inhibitors of MurD from E. coli, which allowed us to explore the structure-activity relationships.The substituted naphthalene-N-sulfonyl-D-Glu inhibitors, which were synthesized as potential transition state analogues, displayed IC50 values ranging from 80 to 600 microM. In addition, the high-resolution crystal structures of MurD in complex with four novel inhibitors revealed details of the binding mode of the inhibitors within the active site of MurD. Structure-activity relationships and cocrystal structures constitute an excellent starting point for further development of novel MurD inhibitors of this structural class.


    Organizational Affiliation

    Drug Discovery, Lek Pharmaceuticals d.d., Verovskova 57, 1526 Ljubljana, Slovenia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
UDP-N-ACETYLMURAMOYLALANINE--D-GLUTAMATE LIGASEA445Escherichia coliMutation(s): 0 
EC: 6.3.2.9
Find proteins for P14900 (Escherichia coli (strain K12))
Explore P14900 
Go to UniProtKB:  P14900
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LKM
Query on LKM

Download CCD File 
A
N-({6-[(4-CYANO-2-FLUOROBENZYL)OXY]NAPHTHALEN-2-YL}SULFONYL)-D-GLUTAMIC ACID
C23 H19 F N2 O7 S
IRJUSGUHNFMVCK-OAQYLSRUSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
KCX
Query on KCX
AL-PEPTIDE LINKINGC7 H14 N2 O4LYS
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LKMKd:  7000   nM  BindingDB
LKMKd:  2200   nM  BindingDB
LKMIC50:  85000   nM  Binding MOAD
LKMKd:  5500   nM  BindingDB
LKMIC50 :  85000   nM  PDBBind
LKMIC50:  85000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.26α = 90
b = 65.26β = 90
c = 134.73γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-11-25
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Database references, Source and taxonomy