Expression of the gene for ornithine decarboxylase of Saccharomyces cerevisiae in Escherichia coli.
Mol Cell Biol
; 5(1): 161-6, 1985 Jan.
Article
em En
| MEDLINE
| ID: mdl-3885007
ABSTRACT
Diploid cells of Saccharomyces cerevisiae homozygous for the spe1A mutation, which eliminates ornithine decarboxylase activity, were found to sporulate at a greatly reduced frequency in the absence of polyamines. Plasmids which complement the spe1A mutation were isolated by their ability to restore sporulation competence to these cells. Three distinct plasmids were isolated. Each plasmid insert overlapped the same 8.0-kilobase region, and each plasmid restored ornithine decarboxylase activity to spe1A mutants. These plasmids also conferred ornithine decarboxylase activity to Escherichia coli EWH319 from which the ornithine decarboxylase gene is deleted. The plasmid-encoded activity expressed in E. coli resembled S. cerevisiae ornithine decarboxylase in its kinetic characteristics, indicating that the yeast ornithine decarboxylase gene was cloned. Southern blot analysis suggested that ornithine decarboxylase is a single-copy gene in S. cerevisiae. A single 2.1-kilobase transcript was demonstrated by Northern blot analysis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ornitina Descarboxilase
/
Saccharomyces cerevisiae
/
Genes Fúngicos
Idioma:
En
Ano de publicação:
1985
Tipo de documento:
Article