Phenotypic expression of Kluyveromyces lactis killer toxin against Saccharomyces spp
نویسندگان
چکیده
منابع مشابه
Genome organization of the killer plasmid pGK12 from Kluyveromyces lactis
We have determined the entire sequence of the plasmid K2 from Kluyveromyces lactis which is involved in the maintenance of both killer plasmids in the cell. K2 shares many of the characteristics of the smaller killer plasmid K1: high A+T content (74.7%) and very compact genomic organization. K2 contains ten open reading frames. Some of them overlap on different strands and some on the same stra...
متن کاملTransfer of DNA killer plasmids from Kluyveromyces lactis to Kluyveromyces fragilis and Candida pseudotropicalis.
Killer plasmids pGKL1 and pGKL2 of double-stranded linear DNAs were transferred from Kluyveromyces lactis to strains of Kluyveromyces fragilis and Candida pseudotropicalis. The resultant killer strains produced 17-fold and 6-fold larger amounts of killer toxin than K. lactis did, respectively. The killer toxin produced by each species appeared to be a glycoprotein.
متن کاملExpression and secretion of recombinant ovine beta-lactoglobulin in Saccharomyces cerevisiae and Kluyveromyces lactis.
High expression and secretion of recombinant ovine beta-lactoglobulin has been achieved in the yeast Kluyveromyces lactis. The yield of beta-lactoglobulin is 40-50 mg per litre of culture supernatant and accounts for approx. 72% of the total secreted protein. Constitutive expression is under the control of the Saccharomyces cerevisiae phosphoglycerate kinase promoter from an intronless version ...
متن کاملKluyveromyces lactis killer system: analysis of cytoplasmic promoters of the linear plasmids.
All of the 14 genes encoded by the cytoplasmic linear killer plasmids of Kluyveromyces lactis are preceded by upstream conserved sequences (UCSs), cis-acting elements involved in plasmid gene transcription. Using the bacterial glucose-dehydrogenase gene as a reporter, expression driven by seven cytoplasmic promoters was determined. The level of expression ranged from 0.5 to 6 nkat. The highest ...
متن کاملExpression and identification of immunity determinants on linear DNA killer plasmids pGKL1 and pGKL2 in Kluyveromyces lactis.
The linear dsDNA plasmids, pGKL1 (8.9 kb) and pGKL2 (13.4 kb) discovered in Kluyveromyces lactis, confer killer and immunity characteristics upon various yeast strains. We have devised an immunity assay and have been able to show the expression of an immunity phenotype in the K. lactis transformants harbouring conventional circular plasmids which contain DNA fragments of pGKL1. Using this expre...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1985
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.50.2.257-260.1985