%0 Journal Article
%T Mode of action of plantaricin L-1, an antilisteria bacteriocin produced by Lactobacillus plantarum<br>植物乳杆菌素L-1对单核细胞增生李斯特氏菌作用机理的研究
%A ZHOU Wei
%A LIU Guo-rong
%A LI Ping-lan
%A DAI Yun-qing
%A ZHOU Kang
%A <br>周伟
%A 刘国荣
%A 李平兰
%A 戴蕴青
%A 周康
%J 微生物学报
%D 2007
%I 
%X Plantaricin L-1, an anti-Listeria bacteriocin, was produced by Lactobacillus plantarum and successfully purified by SP-Sepharose FF cation exchange chromatography. The mechanism on energized cells of Listeria monocytogenes was studied with purified plantaricin L-1. After adding plantaricin L-1 to Listeria monocytogenes at 64 AU/mL, leakage of intercellular K+ ions, inorganic phosphate, lactic dehydrogenase, UV-absorbing materials and the intracellular ATP was observed, and the action resulted in the dissipation of the membrane potential (delta psi) and pH gradient (delta psi), two components of the proton motive force (PMF). All the data suggested that the primary site of action of plantaricin L-1 was the cytoplasmic membrane of sensitive cells. By forming the nonselective pores which leak ions and small organic compounds plantaricin L-1 induced the cells death, this action was similar to membrane corruption caused by peptide effect. Penetrability increased due to the enlarged pore and dysfuction of membrane transporters, which ensured efficient killing of target bacteria.
%K plantaricin
%K mode of action
%K Listeria monocytogenes<br>植物乳杆菌素
%K 作用机理
%K 单核细胞增生李斯特氏菌
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A3C6BA55AB623B90FA9104CFFC826F3C&aid=AFEC06C0A5786A5D&yid=A732AF04DDA03BB3&vid=F4B561950EE1D31A&iid=0B39A22176CE99FB&sid=89AC6B0ADBEA2741&eid=7ABC4505E3960D2B&journal_id=0001-6209&journal_name=微生物学报&referenced_num=1&reference_num=13