Open AccessKiller toxins in new isolates of the yeasts Hanseniaspora uvarum and Pichia kluyveri
Author(s) -
Radler F.,
Pfeiffer P.,
Dennert M.
Publication year - 1985
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1985.tb00874.x
Subject(s) - biology , isoelectric point , yeast , pichia , microbiology and biotechnology , isoelectric focusing , pichia pastoris , biochemistry , enzyme , gene , recombinant dna
From various habitats (plant material, fruits, soil), yeasts belonging to the species of Pichia kluyveri and Hanseniaspora uvarum were isolated that showed killer activity. According to the activity spectrum against other yeasts these strains belonged to 11 different groups that were distinguishable from the killer strains K 1 ‐K 10 . The isoelectric points of the killer proteins were in the range of pH 3.5–3.9, the activity optimum was observed at pH 4.2–4.6. Above pH 5 and above a temperature of 25–35°C the killer proteins were inactivated.