乳酸乳球菌K1同时丧失N5-(羧乙基)鸟氨酸合酶、乳链菌肽产生能力和蔗糖发酵能力。

Donkersloot J A, Thompson J

Laboratory of Microbial Ecology, National Institute of Dental Research, Bethesda, Maryland 20892.

J Bacteriol. 1990 Jul;172(7):4122-6. doi: 10.1128/jb.172.7.4122-4126.1990.

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.

分离出乳酸乳球菌乳酸亚种K1（以前称为乳酸链球菌K1）的一个自发衍生物，该衍生物缺乏N5-（羧乙基）鸟氨酸合酶（EC 1.5.1.24）。该突变体还丧失了发酵蔗糖和产生抗生素乳链菌肽的能力。杂交研究表明，这些连锁性状由乳酸乳球菌K1的染色体编码，并且它们可能位于一个接合转座子上。