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Related Experiment Videos

An autonomously replicating transforming vector for Sulfolobus solfataricus

R Cannio1, P Contursi, M Rossi

  • 1Dipartimento di Chimica Organica e Biologica, Università di Napoli, Italy.

Journal of Bacteriology
|June 11, 1998
PubMed
Summary

Researchers created a novel plasmid for stable maintenance in both Sulfolobus solfataricus and Escherichia coli. This bifunctional vector facilitates genetic manipulation across distinct microbial hosts.

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Biotechnology

Background:

  • * Efficient genetic manipulation tools are crucial for studying archaea like Sulfolobus solfataricus.
  • * Developing shuttle vectors that function in both archaeal and bacterial hosts presents significant challenges.

Purpose of the Study:

  • * To construct a novel bifunctional plasmid vector capable of stable replication and maintenance in both Sulfolobus solfataricus and Escherichia coli.
  • * To establish a reliable transformation system for S. solfataricus using E. coli-based molecular biology techniques.

Main Methods:

  • * Construction of a shuttle vector by integrating the SSV1 autonomously replicating sequence and a hygromycin phosphotransferase (hph) gene into an E. coli plasmid.
  • * Transformation of S. solfataricus and E. coli with the constructed vector.

Related Experiment Videos

  • * Assessment of vector stability, rearrangement, and copy number in S. solfataricus.
  • * Induction of increased vector copy number using mitomycin C treatment in S. solfataricus.

    • Main Results:

    • * A stable shuttle vector was successfully constructed and maintained in both S. solfataricus and E. coli without rearrangement or chromosomal integration.
    • * The hygromycin phosphotransferase gene served as an effective transformation marker in S. solfataricus.
    • * Exposure to mitomycin C significantly increased the copy number of the plasmid in S. solfataricus cells.

    Conclusions:

    • * The developed shuttle vector provides a robust tool for genetic engineering of Sulfolobus species.
    • * This bifunctional plasmid enables seamless transfer of genetic constructs between E. coli and S. solfataricus, simplifying molecular studies.
    • * Mitomycin C treatment offers a method to amplify plasmid copy number in S. solfataricus, potentially enhancing gene expression studies.