Enhanced nisin production by increasing genes involved in nisin Z biosynthesis in <Emphasis Type="Italic">Lactococcus lactis</Emphasis> subsp. <Emphasis Type="Italic">lactis</Emphasis> A164
(1) Department of Biotechnology, Yonsei University, 120-749 Seoul, South Korea;(2) Division of Applied Biological Sciences, Sunmoon University, Chung Nam, Asan, 336-708, South Korea