3DNF

Structure of (E)-4-Hydroxy-3-methyl-but-2-enyl Diphosphate Reductase, the Terminal Enzyme of the Non-Mevalonate Pathway


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of (E)-4-Hydroxy-3-methyl-but-2-enyl Diphosphate Reductase, the Terminal Enzyme of the Non-Mevalonate Pathway.

Rekittke, I.Wiesner, J.Demmer, U.Warkentin, E.Xu, W.Troschke, K.Hintz, M.No, J.H.Duin, E.C.Oldfield, E.Jomaa, H.Ermler, U.

(2008) J.Am.Chem.Soc. --: --

  • DOI: 10.1021/ja806668q

  • PubMed Abstract: 
  • Molecular evolution has evolved two metabolic routes for isoprenoid biosynthesis: the mevalonate and the 2-C-methyl-D-erythritol-4-phosphate (MEP) pathway. The MEP pathway is used by most pathogenic bacteria and some parasitic protozoa (including the ...

    Molecular evolution has evolved two metabolic routes for isoprenoid biosynthesis: the mevalonate and the 2-C-methyl-D-erythritol-4-phosphate (MEP) pathway. The MEP pathway is used by most pathogenic bacteria and some parasitic protozoa (including the malaria parasite, Plasmodium falciparum) as well as by plants, but is not present in animals. The terminal reaction of the MEP pathway is catalyzed by (E)-4-hydroxy-3-methyl-but-2-enyl diphosphate (HMBPP) reductase (LytB), an enzyme that converts HMBPP into isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). Here, we present the structure of Aquifex aeolicus LytB, at 1.65 A resolution. The protein adopts a cloverleaf or trefoil-like structure with each monomer in the dimer containing three alpha/beta domains surrounding a central [Fe3S4] cluster ligated to Cys13, Cys96, and Cys193. Two highly conserved His (His 42 and His 124) and a totally conserved Glu (Glu126) are located in the same central site and are proposed to be involved in ligand binding and catalysis. Substrate access is proposed to occur from the front-side face of the protein, with the HMBPP diphosphate binding to the two His and the 4OH of HMBPP binding to the fourth iron thought to be present in activated clusters, while Glu126 provides the protons required for IPP/DMAPP formation.


    Organizational Affiliation

    Institut für Klinische Immunologie and Transfusionsmedizin, Justus-Liebig-Universität Giessen, Langhansstrasse 7, 35385 Giessen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
4-hydroxy-3-methylbut-2-enyl diphosphate reductase
A, B
297Aquifex aeolicus (strain VF5)Gene Names: ispH (lytB)
EC: 1.17.7.4
Find proteins for O67625 (Aquifex aeolicus (strain VF5))
Go to UniProtKB:  O67625
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
F3S
Query on F3S

Download SDF File 
Download CCD File 
A, B
FE3-S4 CLUSTER
Fe3 S4
FCXHZBQOKRZXKS-MZMDZPPWAW
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.193 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 60.370α = 90.00
b = 87.760β = 95.13
c = 72.400γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
MAR345dtbdata collection
SHARPphasing
XDSdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2008-07-02 
  • Released Date: 2008-12-30 
  • Deposition Author(s): Rekittke, I.

Revision History 

  • Version 1.0: 2008-12-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance