4C7V

Apo Transketolase from Lactobacillus salivarius at 2.2A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.162 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High Resolution Crystal Structures of Lactobacillus Salivarius Transketolase in the Presence and Absence of Thiamine Pyrophosphate

Lukacik, P.Lobley, C.M.C.Bumann, M.Arena De Souza, V.Owens, R.J.O'Toole, P.W.Walsh, M.A.

(2015) Acta Crystallogr.,Sect.F 71: 1327

  • DOI: 10.1107/S2053230X1501657X
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Probiotic bacterial strains have been shown to enhance the health of the host through a range of mechanisms including colonization, resistance against pathogens, secretion of antimicrobial compounds and modulation of the activity of the innate immune ...

    Probiotic bacterial strains have been shown to enhance the health of the host through a range of mechanisms including colonization, resistance against pathogens, secretion of antimicrobial compounds and modulation of the activity of the innate immune system. Lactobacillus salivarius UCC118 is a well characterized probiotic strain which survives intestinal transit and has many desirable host-interaction properties. Probiotic bacteria display a wide range of catabolic activities, which determine their competitiveness in vivo. Some lactobacilli are heterofermentative and can metabolize pentoses, using a pathway in which transketolase and transaldolase are key enzymes. L. salivarius UCC118 is capable of pentose utilization because it encodes the key enzymes on a megaplasmid. The crystal structures of the megaplasmid-encoded transketolase with and without the enzyme cofactor thiamine pyrophosphate have been determined. Comparisons with other known transketolase structures reveal a high degree of structural conservation in both the catalytic site and the overall conformation. This work extends structural knowledge of the transketolases to the industrially and commercially important Lactobacillus genus.


    Organizational Affiliation

    Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSKETOLASE
A
681Lactobacillus salivarius (strain UCC118)Mutation(s): 0 
Gene Names: tktA
EC: 2.2.1.1
Find proteins for Q1WQU8 (Lactobacillus salivarius (strain UCC118))
Go to UniProtKB:  Q1WQU8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.162 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 76.150α = 90.00
b = 76.150β = 90.00
c = 194.510γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
SCALAdata scaling
xia2data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-08
    Type: Initial release
  • Version 1.1: 2015-10-14
    Type: Database references, Structure summary
  • Version 1.2: 2015-10-21
    Type: Database references