Journal of Industrial Microbiology & Biotechnology

, Volume 44, Issue 10, pp 1443–1458 | Cite as

Concurrent metabolism of pentose and hexose sugars by the polyextremophile Alicyclobacillus acidocaldarius

  • Brady D. LeeEmail author
  • William A. Apel
  • Linda C. DeVeaux
  • Peter P. Sheridan
Bioenergy/Biofuels/Biochemicals - Original Paper


Alicyclobacillus acidocaldarius is a thermoacidophilic bacterium capable of growth on sugars from plant biomass. Carbon catabolite repression (CCR) allows bacteria to focus cellular resources on a sugar that provides efficient growth, but also allows sequential, rather than simultaneous use when more than one sugar is present. The A. acidocaldarius genome encodes all components of CCR, but transporters encoded are multifacilitator superfamily and ATP-binding cassette-type transporters, uncommon for CCR. Therefore, global transcriptome analysis of A. acidocaldarius grown on xylose or fructose was performed in chemostats, followed by attempted induction of CCR with glucose or arabinose. Alicyclobacillus acidocaldarius grew while simultaneously metabolizing xylose and glucose, xylose and arabinose, and fructose and glucose, indicating that CCR did not control carbon metabolism. Microarrays showed down-regulation of genes during growth on one sugar compared to two, and occurred primarily in genes encoding: (1) regulators; (2) enzymes for cell wall synthesis; and (3) sugar transporters.


Alicyclobacillus acidocaldarius Thermoacidophile Lignocellulose Microarray 



This work was supported by the Idaho National Laboratory’s—Laboratory Directed Research and Development program under the Department of Energy Idaho Operations Office Contract DE-AC07-05ID14517.

Supplementary material

10295_2017_1968_MOESM1_ESM.docx (109 kb)
Supplementary material 1 (DOCX 108 kb)


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Copyright information

© Society for Industrial Microbiology and Biotechnology (outside the USA) 2017

Authors and Affiliations

  1. 1.Idaho National LaboratoryBiological Systems DepartmentIdaho FallsUSA
  2. 2.Department of Chemistry and Applied Biological SciencesSouth Dakota School of Mines and TechnologyRapid CityUSA
  3. 3.Department of Biological SciencesIdaho State UniversityPocatelloUSA
  4. 4.Pacific Northwest National LaboratoryEnergy and Environment DirectorateRichlandUSA
  5. 5.Aspenglow Associates, LLCJacksonUSA

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