1H47

Structures of MECP synthase in complex with (i) CMP and (ii) CMP and product


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Identification of Isoprenoids that Bind in the Intersubunit Cavity of Escherichia Coli 2C-Methyl-D-Erythritol-2,4-Cyclodiphosphate Synthase by Complementary Biophysical Methods

Kemp, L.E.Alphey, M.S.Bond, C.S.Ferguson, M.Hecht, S.Bacher, A.Eisenreich, W.Rohdich, F.Hunter, W.N.

(2005) Acta Crystallogr.,Sect.D 61: 45

  • DOI: 10.1107/S0907444904025971
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The discovery of a distinct metabolic pathway, the non-mevalonate or 1-deoxy-D-xylulose-5-phosphate (DOXP) pathway for isoprenoid precursor biosynthesis, in eubacteria and apicomplexan parasites has revealed a new set of potential drug targets. The e ...

    The discovery of a distinct metabolic pathway, the non-mevalonate or 1-deoxy-D-xylulose-5-phosphate (DOXP) pathway for isoprenoid precursor biosynthesis, in eubacteria and apicomplexan parasites has revealed a new set of potential drug targets. The emphasis of research on this pathway has been on delineating the intermediates and the biochemical and structural characterization of component enzymes. Two new monoclinic crystal forms of recombinant Escherichia coli 2C-methyl-D-erythritol-2,4-cyclodiphosphate (MECP) synthase cocrystallized with (i) CMP and (ii) CMP and MECP show well defined electron density at the subunit interface suggestive of an isoprenoid-like ligand. 31P NMR analysis of the recombinant protein sample indicates the presence of bound diphosphate species and electrospray mass spectrometry identifies a mixture of isopentenyl diphosphate (and/or dimethylallyl diphosphate), geranyl diphosphate and farnesyl diphosphate in an approximate ratio of 1:4:2. The most prevalent species, geranyl diphosphate, was successfully modelled into the electron density, revealing the important protein-ligand interactions that stabilize binding of the isoprenoid. The observation that MECP synthase binds three metabolites that are produced by enzymes two, three and four stages downstream in isoprenoid biosynthesis suggests that feedback regulation of the non-mevalonate pathway is possible.


    Related Citations: 
    • Structure of 2C-Methyl-D-Erythritol 2,4 Cyclodiphosphate Synthase
      Kemp, L.E.,Alphey, M.S.,Bond, C.S.,Hunter, W.N.
      (2002) Proc.Natl.Acad.Sci.USA 99: 6591


    Organizational Affiliation

    Division of Biological Chemistry and Molecular Microbiology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
2C-METHYL-D-ERYTHRITOL-2,4-CYCLODIPHOSPHATE SYNTHASE
A, B, C, D, E, F
161Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: ispF (mecS, ygbB)
EC: 4.6.1.12
Find proteins for P62617 (Escherichia coli (strain K12))
Go to UniProtKB:  P62617
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B, C, D, E, F
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
C5P
Query on C5P

Download SDF File 
Download CCD File 
A, B, C, D, E, F
CYTIDINE-5'-MONOPHOSPHATE
C9 H14 N3 O8 P
IERHLVCPSMICTF-XVFCMESISA-N
 Ligand Interaction
GPP
Query on GPP

Download SDF File 
Download CCD File 
A, D
GERANYL DIPHOSPHATE
C10 H20 O7 P2
GVVPGTZRZFNKDS-JXMROGBWSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.214 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 88.082α = 90.00
b = 117.582β = 90.21
c = 54.215γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance