Transformation of Streptococcus lactis Protoplasts by Plasmid DNA.
Polyethylene glycol-treated protoplasts prepared from Streptococcus lactis LM3302, a lactose-negative (Lac) derivative of S. lactis ML3, were transformed to lactose-fermenting ability by a transductionally shortened plasmid (pLM2103) coding for lactose utilization.
Kondo
J K
JK
Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota 55108.
McKay
L L
LL