2EZT

Pyruvate oxidase variant F479W in complex with reaction intermediate 2-hydroxyethyl-thiamin diphosphate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.150 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The catalytic cycle of a thiamin diphosphate enzyme examined by cryocrystallography.

Wille, G.Meyer, D.Steinmetz, A.Hinze, E.Golbik, R.Tittmann, K.

(2006) Nat.Chem.Biol. 2: 324-328

  • DOI: 10.1038/nchembio788
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Enzymes that use the cofactor thiamin diphosphate (ThDP, 1), the biologically active form of vitamin B(1), are involved in numerous metabolic pathways in all organisms. Although a theory of the cofactor's underlying reaction mechanism has been establ ...

    Enzymes that use the cofactor thiamin diphosphate (ThDP, 1), the biologically active form of vitamin B(1), are involved in numerous metabolic pathways in all organisms. Although a theory of the cofactor's underlying reaction mechanism has been established over the last five decades, the three-dimensional structures of most major reaction intermediates of ThDP enzymes have remained elusive. Here, we report the X-ray structures of key intermediates in the oxidative decarboxylation of pyruvate, a central reaction in carbon metabolism catalyzed by the ThDP- and flavin-dependent enzyme pyruvate oxidase (POX)3 from Lactobacillus plantarum. The structures of 2-lactyl-ThDP (LThDP, 2) and its stable phosphonate analog, of 2-hydroxyethyl-ThDP (HEThDP, 3) enamine and of 2-acetyl-ThDP (AcThDP, 4; all shown bound to the enzyme's active site) provide profound insights into the chemical mechanisms and the stereochemical course of thiamin catalysis. These snapshots also suggest a mechanism for a phosphate-linked acyl transfer coupled to electron transfer in a radical reaction of pyruvate oxidase.


    Organizational Affiliation

    Institut für Biochemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle/Saale, Germany. georg.wille@biochemtech.uni-halle.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pyruvate oxidase
A, B
603Lactobacillus plantarum (strain ATCC BAA-793 / NCIMB 8826 / WCFS1)Mutation(s): 1 
Gene Names: pox5
EC: 1.2.3.3
Find proteins for P37063 (Lactobacillus plantarum (strain ATCC BAA-793 / NCIMB 8826 / WCFS1))
Go to UniProtKB:  P37063
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

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A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
NA
Query on NA

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A, B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
PYR
Query on PYR

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A, B
PYRUVIC ACID
C3 H4 O3
LCTONWCANYUPML-UHFFFAOYSA-N
 Ligand Interaction
FAD
Query on FAD

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A, B
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
TDM
Query on TDM

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A, B
2-[(2E)-3-[(4-AMINO-2-METHYLPYRIMIDIN-5-YL)METHYL]-2-(1-HYDROXYETHYLIDENE)-4-METHYL-2,3-DIHYDRO-1,3-THIAZOL-5-YL]ETHYL TRIHYDROGEN DIPHOSPHATE
2-HYDROXYETHYLTHIAMIN DIPHOSPHATE
C14 H22 N4 O8 P2 S
ZZLCKFKIIVXBQU-NTEUORMPSA-N
 Ligand Interaction
MG
Query on MG

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A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.150 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 118.790α = 90.00
b = 154.022β = 90.00
c = 165.320γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOLREPphasing
DENZOdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-25
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description