Biotechnology Letters

, Volume 20, Issue 7, pp 647–651

Production of ice nuclei from two recombinant Zymomonas mobilis strains employing the inaZ gene of Pseudomonas syringae

  • Athanassia Varsaki
  • Amalia S. Afendra
  • Georgios Vartholomatos
  • Georgios Tegos
  • Constantin Drainas
Article

Abstract

A new recombinant plasmid, pBZIP1, was constructed for heterologous expression of high levels of ice nucleation activity in ethanol-producing Zymomonas mobilis strains CP4 and NCIB 11163. The plasmid construct contained the mobilization region and tetracycline resistance gene of pBR325, the replication region of the Z. mobilis native plasmid pZMO3 and the Pseudomonas syringae ice nucleation gene under the control of the Z. mobilis CP4 pyruvate decarboxylase promoter (Ppdc). Z. mobilis transconjugants retained the plasmid stably, expressed ice nucleation activity up to 0.73 log [ice nuclei/cell] and can be used as improved sources of ice nuclei for industrial applications. © Rapid Science Ltd. 1998

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Copyright information

© Chapman and Hall 1998

Authors and Affiliations

  • Athanassia Varsaki
    • 1
  • Amalia S. Afendra
    • 1
  • Georgios Vartholomatos
    • 1
  • Georgios Tegos
    • 1
  • Constantin Drainas
    • 1
  1. 1.Sector of Organic Chemistry and Biochemistry, Department of ChemistryUniversity of IoanninaIoanninaGreece

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