1P0N

IPP:DMAPP isomerase type II, FMN complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Type II Isopentenyl Diphosphate:Dimethylallyl Diphosphate Isomerase from Bacillus subtilis

Steinbacher, S.Kaiser, J.Gerhardt, S.Eisenreich, W.Huber, R.Bacher, A.Rohdich, F.

(2003) J.Mol.Biol. 329: 973-982

  • Primary Citation of Related Structures:  1P0K

  • PubMed Abstract: 
  • Two types of isopentenyl diphosphate:dimethylallyl diphosphate isomerases (IDI) have been characterized at present. The long known IDI-1 is only dependent on divalent metals for activity, whereas IDI-2 requires a metal, FMN and NADPH. Here, we report ...

    Two types of isopentenyl diphosphate:dimethylallyl diphosphate isomerases (IDI) have been characterized at present. The long known IDI-1 is only dependent on divalent metals for activity, whereas IDI-2 requires a metal, FMN and NADPH. Here, we report the first structure of an IDI-2 from Bacillus subtilis at 1.9A resolution in the ligand-free form and of the FMN-bound form at 2.8A resolution. The enzyme is an octamer that forms a D4 symmetrical open, cage-like structure. The monomers of 45 kDa display a classical TIM barrel fold. FMN is bound only with very moderate affinity and is therefore completely lost during purification. However, the enzyme can be reconstituted in the crystals by soaking with FMN. Three glycine-rich sequence stretches that are characteristic for IDI-2 participate in FMN binding within the interior of the cage. Regions harboring strictly conserved residues that are implicated in substrate binding or catalysis remain largely disordered even in the presence of FMN.


    Organizational Affiliation

    Abteilung für Strukturforschung, Max-Planck-Institut für Biochemie, Am Klopferspitz 18a, D-82152 Martinsried, Germany. steinbac@caltech.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Isopentenyl-diphosphate delta-isomerase
A, B
349Bacillus subtilis (strain 168)Gene Names: fni (idi, ypgA)
EC: 5.3.3.2
Find proteins for P50740 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P50740
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download SDF File 
Download CCD File 
A, B
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.219 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 115.027α = 90.00
b = 115.027β = 90.00
c = 139.939γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-17
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance