Cloning of the ATP sulphurylase gene of Schizosaccharomyces pombe by functional complementation

Tibor Simonics, A. Maráz

Research output: Contribution to journalArticle

Abstract

The ATP sulphurylase gene of Schizosaccharomyces pombe has been cloned by complementation of cysteine auxotrophy of a selenate-resistant mutant, which supposedly had a defect in ATP sulphurylase. A sulphate nonutilizing (cysteine auxotrophic) and selenate-resistant mutant of S. pombe was transformed with a wild-type S. pombe genomic library and sulphate-utilizing clones were isolated. The open reading frame encoding the ATP sulphurylase enzyme was found to be responsible for the restoration of sulphate assimilation. Transformants became as sensitive for selenate as the wild-type strain and produced a comparable amount of ATP sulphurylase as the prototrophic strains. The cloned ATP sulphurylase gene (sua1) proved to be an efficient selection marker in an ARS vector, when different isogenic or nonisogenic S. pombe selenate-resistant mutants were used as cloning hosts. Complementation of sua1- mutations by sua1-bearing multicopy vectors functions as a useful dual positive and negative selection marker. The cloned sua1 gene also complemented the met3 (ATP sulphurylase deficient) mutation in Saccharomyces cerevisiae.

Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalCanadian Journal of Microbiology
Volume54
Issue number1
DOIs
Publication statusPublished - Jan 2008

Fingerprint

Schizosaccharomyces
Cloning
Selenic Acid
Organism Cloning
Genes
Adenosine Triphosphate
Sulfates
Cysteine
Bearings (structural)
Mutation
Genomic Library
Yeast
Open Reading Frames
Restoration
Saccharomyces cerevisiae
Clone Cells
Defects
Enzymes

Keywords

  • ATP sulphurylase gene
  • Cloning
  • Schizosaccharomyces pombe
  • Vector

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Biotechnology
  • Immunology
  • Microbiology

Cite this

Cloning of the ATP sulphurylase gene of Schizosaccharomyces pombe by functional complementation. / Simonics, Tibor; Maráz, A.

In: Canadian Journal of Microbiology, Vol. 54, No. 1, 01.2008, p. 71-74.

Research output: Contribution to journalArticle

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