3LOG

Crystal structure of MbtI from Mycobacterium tuberculosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Inhibition studies of Mycobacterium tuberculosis salicylate synthase (MbtI).

Manos-Turvey, A.Bulloch, E.M.Rutledge, P.J.Baker, E.N.Lott, J.S.Payne, R.J.

(2010) Chemmedchem 5: 1067-1079

  • DOI: 10.1002/cmdc.201000137

  • PubMed Abstract: 
  • Mycobacterium tuberculosis salicylate synthase (MbtI), a member of the chorismate-utilizing enzyme family, catalyses the first committed step in the biosynthesis of the siderophore mycobactin T. This complex secondary metabolite is essential for both ...

    Mycobacterium tuberculosis salicylate synthase (MbtI), a member of the chorismate-utilizing enzyme family, catalyses the first committed step in the biosynthesis of the siderophore mycobactin T. This complex secondary metabolite is essential for both virulence and survival of M. tuberculosis, the etiological agent of tuberculosis (TB). It is therefore anticipated that inhibitors of this enzyme may serve as TB therapies with a novel mode of action. Herein we describe the first inhibition study of M. tuberculosis MbtI using a library of functionalized benzoate-based inhibitors designed to mimic the substrate (chorismate) and intermediate (isochorismate) of the MbtI-catalyzed reaction. The most potent inhibitors prepared were those designed to mimic the enzyme intermediate, isochorismate. These compounds, based on a 2,3-dihydroxybenzoate scaffold, proved to be low-micromolar inhibitors of MbtI. The most potent inhibitors in this series possessed hydrophobic enol ether side chains at C3 in place of the enol-pyruvyl side chain found in chorismate and isochorismate.


    Organizational Affiliation

    School of Chemistry, The University of Sydney, NSW 2006, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Isochorismate synthase/isochorismate-pyruvate lyase mbtI
A, B, C, D
451Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Gene Names: mbtI (trpE2)
EC: 4.2.99.21, 5.4.4.2, 5.4.99.5
Find proteins for P9WFX1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WFX1
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

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B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SIN
Query on SIN

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Download CCD File 
A, B, C, D
SUCCINIC ACID
C4 H6 O4
KDYFGRWQOYBRFD-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A, B, C, D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CO3
Query on CO3

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Download CCD File 
B
CARBONATE ION
C O3
BVKZGUZCCUSVTD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.181 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 87.870α = 90.00
b = 115.703β = 91.60
c = 93.893γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
DENZOdata reduction
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
REFMACrefinement
MAR345dtbdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-02-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description