Open AccessSimultaneous loss of N5-(carboxyethyl)ornithine synthase, nisin production, and sucrose-fermenting ability by Lactococcus lactis K1
Author(s) -
Jacob A. Donkersloot,
John F. Thompson
Publication year - 1990
Publication title -
journal of bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.652
H-Index - 246
eISSN - 1067-8832
pISSN - 0021-9193
DOI - 10.1128/jb.172.7.4122-4126.1990
Subject(s) - lactococcus lactis , biology , nisin , lactococcus , fermentation , streptococcaceae , microbiology and biotechnology , biochemistry , ornithine , bacteria , antibiotics , genetics , lactic acid , antimicrobial , amino acid , arginine
A spontaneous derivative of Lactococcus lactis subsp. lactis K1 (formerly Streptococcus lactis K1) lacking N5-(carboxyethyl)ornithine synthase (EC 1.5.1.24) was isolated. This mutant had also lost the abilities to ferment sucrose and to produce the antibiotic nisin. Hybridization studies indicate that these linked traits are encoded on the chromosome of L. lactis K1 and that they may be located on a conjugative transposon.