4RJK

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.168 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 2.0 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: https://doi.org/10.1002/cbic.201402541
  • Primary Citation of Related Structures:  
    4RJI, 4RJJ, 4RJK

  • 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 (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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Acetolactate synthase
A, B, C, D, E
A, B, C, D, E, F, G, H
571Bacillus subtilis PY79Mutation(s): 0 
Gene Names: U712_18080
EC: 4.1.3.18
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
TDL
Query on TDL

Download Ideal Coordinates CCD File 
OB [auth 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
C15 H23 N4 O10 P2 S
TVDSMGSBVYONNB-OAHLLOKOSA-O
TPP
Query on TPP

Download Ideal Coordinates CCD File 
EA [auth D]
GB [auth G]
I [auth A]
NA [auth E]
Q [auth B]
EA [auth D],
GB [auth G],
I [auth A],
NA [auth E],
Q [auth B],
WA [auth F],
X [auth C]
THIAMINE DIPHOSPHATE
C12 H19 N4 O7 P2 S
AYEKOFBPNLCAJY-UHFFFAOYSA-O
PG4
Query on PG4

Download Ideal Coordinates CCD File 
AA [auth C]
AB [auth F]
BA [auth C]
BB [auth F]
CA [auth C]
AA [auth C],
AB [auth F],
BA [auth C],
BB [auth F],
CA [auth C],
CB [auth F],
DA [auth C],
DB [auth F],
GA [auth D],
HA [auth D],
IA [auth D],
IB [auth G],
JA [auth D],
JB [auth G],
K [auth A],
KA [auth D],
KB [auth G],
L [auth A],
LA [auth D],
LB [auth G],
M [auth A],
MA [auth D],
N [auth A],
O [auth A],
P [auth A],
PA [auth E],
QA [auth E],
QB [auth H],
RA [auth E],
RB [auth H],
S [auth B],
SA [auth E],
T [auth B],
TA [auth E],
U [auth B],
UA [auth E],
V [auth B],
VA [auth E],
W [auth B],
YA [auth F],
Z [auth C],
ZA [auth F]
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
PYR
Query on PYR

Download Ideal Coordinates CCD File 
EB [auth F],
FB [auth F],
MB [auth G],
NB [auth G],
SB [auth H]
PYRUVIC ACID
C3 H4 O3
LCTONWCANYUPML-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
FA [auth D]
HB [auth G]
J [auth A]
OA [auth E]
PB [auth H]
FA [auth D],
HB [auth G],
J [auth A],
OA [auth E],
PB [auth H],
R [auth B],
XA [auth F],
Y [auth C]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.168 
  • Space Group: P 21 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.51α = 90
b = 170.75β = 90
c = 342.59γ = 90
Software Package:
Software NamePurpose
DNAdata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-22
    Type: Initial release
  • Version 1.1: 2014-11-26
    Changes: Database references
  • Version 1.2: 2015-01-07
    Changes: Database references
  • Version 1.3: 2018-03-07
    Changes: Data collection
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Database references, Derived calculations