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Title: Glycolysis without pyruvate kinase in Clostridium thermocellum

Journal Article · · Metabolic Engineering
 [1];  [2];  [2];  [1];  [1];  [1];  [3];  [1];  [2];  [1]
  1. Dartmouth College, Hanover, NH (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. ETH Zurich, Zurich (Switzerland)
  3. Univ. of Wisconsin-Madison, Madison, WI (United States)

The metabolism of Clostridium thermocellum is notable in that it assimilates sugar via the EMP pathway but does not possess a pyruvate kinase enzyme. In the wild type organism, there are three proposed pathways for conversion of phosphoenolpyruvate (PEP) to pyruvate, which differ in their cofactor usage. One path uses pyruvate phosphate dikinase (PPDK), another pathway uses the combined activities of PEP carboxykinase (PEPCK) and oxaloacetate decarboxylase (ODC). Yet another pathway, the malate shunt, uses the combined activities of PEPCK, malate dehydrogenase and malic enzyme. First we showed that there is no flux through the ODC pathway by enzyme assay. Flux through the remaining two pathways (PPDK and malate shunt) was determined by dynamic 13C labeling. In the wild-type strain, the malate shunt accounts for about 33 ± 2% of the flux to pyruvate, with the remainder via the PPDK pathway. Deletion of the ppdk gene resulted in a redirection of all pyruvate flux through the malate shunt. Lastly, this provides the first direct evidence of the in-vivo function of the malate shunt.

Research Organization:
Dartmouth College, Hanover, NH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-00OR22725; AC02-05CH11231
OSTI ID:
1333931
Alternate ID(s):
OSTI ID: 1397061
Journal Information:
Metabolic Engineering, Journal Name: Metabolic Engineering; ISSN 1096-7176
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

References (44)

Systems-Level Metabolic Flux Profiling Elucidates a Complete, Bifurcated Tricarboxylic Acid Cycle in Clostridium acetobutylicum journal July 2010
High Ethanol Titers from Cellulose by Using Metabolically Engineered Thermophilic, Anaerobic Microbes journal September 2011
Purification and Regulatory Properties of the Oxaloacetate Decarboxylase of Acetobacter xylinum journal April 1978
Increase in Ethanol Yield via Elimination of Lactate Production in an Ethanol-Tolerant Mutant of Clostridium thermocellum journal February 2014
Ultrahigh Performance Liquid Chromatography−Tandem Mass Spectrometry Method for Fast and Robust Quantification of Anionic and Aromatic Metabolites journal June 2010
Redirecting carbon flux through exogenous pyruvate kinase to achieve high ethanol yields in Clostridium thermocellum journal January 2013
Characterization of a Membrane-Bound Biotin-Containing Enzyme: Oxaloacetate Decarboxylase from Klebsiella aerogenes journal April 1981
High-throughput metabolic flux analysis based on gas chromatography–mass spectrometry derived 13C constraints journal February 2004
Enzymatic Assembly of Overlapping DNA Fragments book May 2011
Genome-scale metabolic model integrated with RNAseq data to identify metabolic states of Clostridium thermocellum journal July 2010
Development and evaluation of methods to infer biosynthesis and substrate consumption in cultures of cellulolytic microorganisms journal April 2013
Non-stationary 13 C-metabolic flux ratio analysis: Non-Stationary 13 C-Metabolic Flux Ratio Analysis journal August 2013
Pigeon Liver Malic Enzyme journal February 1967
KEGG as a reference resource for gene and protein annotation journal October 2015
Genetic and Functional Analysis of the Soluble Oxaloacetate Decarboxylase from Corynebacterium glutamicum journal May 2010
Oxaloacetate Decarboxylase fromPseudomonas stutzeri:Purification and Characterization journal May 1999
Thermostable, ammonium-activated malic enzyme of Clostridium thermocellum journal August 1981
Real-time metabolome profiling of the metabolic switch between starvation and growth journal September 2015
Determination of Metabolic Flux Ratios From 13C-Experiments and Gas Chromatography-Mass Spectrometry Data book January 2007
Properties of oxaloacetate decarboxylase from Veillonella parvula journal June 1982
Mode of sugar phosphorylation inClostridium thermocellum journal April 1992
The benefits of being transient: isotope-based metabolic flux analysis at the short time scale journal July 2011
Novel enzymic machinery for the metabolism of oxalacetate, phosphoenolpyruvate, and pyruvate in Pseudomonas citronellolis. journal February 1977
Transformation of Clostridium Thermocellum by Electroporation book January 2012
Elimination of metabolic pathways to all traditional fermentation products increases ethanol yields in Clostridium thermocellum journal November 2015
The Oxalacetate Decarboxylase of Azotobacter Vinelandii journal August 1949
Transcriptomic analysis of Clostridium thermocellum ATCC 27405 cellulose fermentation journal January 2011
Biochemical and Genetic Characterization of the Enterococcus faecalis Oxaloacetate Decarboxylase Complex journal May 2013
Global Gene Expression Patterns in Clostridium thermocellum as Determined by Microarray Analysis of Chemostat Cultures on Cellulose or Cellobiose journal December 2010
Collisional fragmentation of central carbon metabolites in LC-MS/MS increases precision of 13C metabolic flux analysis journal October 2011
Proteomic analysis of Clostridium thermocellum core metabolism: relative protein expression profiles and growth phase-dependent changes in protein expression journal January 2012
Expression and characterization of recombinant pyruvate phosphate dikinase from Entamoeba histolytica journal January 1998
Saccharomyces cerevisiae-Based Molecular Tool Kit for Manipulation of Genes from Gram-Negative Bacteria journal July 2006
Elucidation of Enzymes in Fermentation Pathways Used by Clostridium thermosuccinogenes Growing on Inulin journal January 2000
Elucidating central metabolic redox obstacles hindering ethanol production in Clostridium thermocellum journal November 2015
Simultaneous achievement of high ethanol yield and titer in Clostridium thermocellum journal June 2016
Phosphoenolpyruvate synthetase and pyruvate, phosphate dikinase of Thermoproteus tenax: key pieces in the puzzle of archaeal carbohydrate metabolism journal April 2006
Development of pyrF-Based Genetic System for Targeted Gene Deletion in Clostridium thermocellum and Creation of a pta Mutant journal August 2010
Kinetic Mechanism and Metabolic Role of Pyruvate Phosphate Dikinase from Entamoeba histolytica journal December 2004
13C-based metabolic flux analysis journal May 2009
Hydrogen Formation and Its Regulation in Ruminococcus albus: Involvement of an Electron-Bifurcating [FeFe]-Hydrogenase, of a Non-Electron-Bifurcating [FeFe]-Hydrogenase, and of a Putative Hydrogen-Sensing [FeFe]-Hydrogenase journal August 2014
Atypical Glycolysis in Clostridium thermocellum journal February 2013
Physiological roles of pyruvate ferredoxin oxidoreductase and pyruvate formate-lyase in Thermoanaerobacterium saccharolyticum JW/SL-YS485 journal September 2015
Quantification and Mass Isotopomer Profiling of α-Keto Acids in Central Carbon Metabolism journal February 2014

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Isotope-Assisted Metabolite Analysis Sheds Light on Central Carbon Metabolism of a Model Cellulolytic Bacterium Clostridium thermocellum journal August 2018
Genomes of rumen bacteria encode atypical pathways for fermenting hexoses to short-chain fatty acids: Atypical fermentation pathways journal November 2017
Metabolome analysis reveals a role for glyceraldehyde 3-phosphate dehydrogenase in the inhibition of C. thermocellum by ethanol journal November 2017
Model metabolic strategy for heterotrophic bacteria in the cold ocean based on Colwellia psychrerythraea 34H journal November 2018
Enhanced ethanol formation by Clostridium thermocellum via pyruvate decarboxylase journal October 2017
Development of a core Clostridium thermocellum kinetic metabolic model consistent with multiple genetic perturbations journal May 2017
Metabolic engineering of Clostridium thermocellum for n-butanol production from cellulose journal July 2019
Building a genome engineering toolbox in nonmodel prokaryotic microbes journal May 2018
Rex in Caldicellulosiruptor bescii : Novel regulon members and its effect on the production of ethanol and overflow metabolites journal April 2018
Clostridium thermocellum LL1210 pH homeostasis mechanisms informed by transcriptomics and metabolomics journal April 2018
Expression of adhA from different organisms in Clostridium thermocellum journal November 2017
The role of Wnt signaling pathway in tumor metabolic reprogramming journal January 2019