4RJK

Acetolactate synthase from Bacillus subtilis bound to LThDP - crystal form II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Detailed Structure-Function Correlations of Bacillus subtilis Acetolactate Synthase.

Sommer, B.von Moeller, H.Haack, M.Qoura, F.Langner, C.Bourenkov, G.Garbe, D.Loll, B.Bruck, T.

(2015) Chembiochem 16: 110-118

  • DOI: 10.1002/cbic.201402541
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Isobutanol is deemed to be a next-generation biofuel and a renewable platform chemical.1 Non-natural biosynthetic pathways for isobutanol production have been implemented in cell-based and in vitro systems with Bacillus subtilis acetolactate synthase ...

    Isobutanol is deemed to be a next-generation biofuel and a renewable platform chemical.1 Non-natural biosynthetic pathways for isobutanol production have been implemented in cell-based and in vitro systems with Bacillus subtilis acetolactate synthase (AlsS) as key biocatalyst.2-6 AlsS catalyzes the condensation of two pyruvate molecules to acetolactate with thiamine diphosphate and Mg(2+) as cofactors. AlsS also catalyzes the conversion of 2-ketoisovalerate into isobutyraldehyde, the immediate precursor of isobutanol. Our phylogenetic analysis suggests that the ALS enzyme family forms a distinct subgroup of ThDP-dependent enzymes. To unravel catalytically relevant structure-function relationships, we solved the AlsS crystal structure at 2.3 Å in the presence of ThDP, Mg(2+) and in a transition state with a 2-lactyl moiety bound to ThDP. We supplemented our structural data by point mutations in the active site to identify catalytically important residues.


    Organizational Affiliation

    Fachgebiet Industrielle Biokatalyse, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching (Germany).




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Acetolactate synthase
A, B, C, D, E, F, G, H
571N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TPP
Query on TPP

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G
THIAMINE DIPHOSPHATE
C12 H19 N4 O7 P2 S
AYEKOFBPNLCAJY-UHFFFAOYSA-O
 Ligand Interaction
PYR
Query on PYR

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Download CCD File 
F, G, H
PYRUVIC ACID
C3 H4 O3
LCTONWCANYUPML-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
TDL
Query on TDL

Download SDF File 
Download CCD File 
H
3-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-2-(1-CARBOXY-1-HYDROXYETHYL)-5-(2-{[HYDROXY(PHOSPHONOOXY)PHOSPHORYL]OXY}ETHYL)-4-METHYL-1,3-THIAZOL-3-IUM
2-LACTYLTHIAMIN DIPHOSPHATE
C15 H23 N4 O10 P2 S
TVDSMGSBVYONNB-OAHLLOKOSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.166 
  • Space Group: P 21 2 21
Unit Cell:
Length (Å)Angle (°)
a = 111.510α = 90.00
b = 170.750β = 90.00
c = 342.590γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
XSCALEdata scaling
DNAdata collection
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-22
    Type: Initial release
  • Version 1.1: 2014-11-26
    Type: Database references
  • Version 1.2: 2015-01-07
    Type: Database references
  • Version 1.3: 2018-03-07
    Type: Data collection