CORRELATION OF BIOENERGETIC PARAMETERS WITH CELL-DEATH IN LISTERIA-MONOCYTOGENES CELLS EXPOSED TO NISIN

被引:62
作者
WINKOWSKI, K [1 ]
BRUNO, MEC [1 ]
MONTVILLE, TJ [1 ]
机构
[1] RUTGERS STATE UNIV,COOK COLL,NEW JERSEY AGR EXPT STN,DEPT FOOD SCI,NEW BRUNSWICK,NJ 08903
关键词
D O I
10.1128/AEM.60.11.4186-4188.1994
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
In Listeria monocytogenes, nisin induced ATP efflux, reduced the intracellular ATP concentration within 1 min, and dissipated the proton motive force within 2 min. Efflux accounted for only 20% of the ATP depletion, suggesting that ATP hydrolysis also occurred. ATP efflux depended on nisin concentration and followed saturation kinetics. These results suggest that nisin breaches the membrane permeability barrier in a manner more consistent with pore formation than with a nonspecific detergent-like membrane destabilization.
引用
收藏
页码:4186 / 4188
页数:3
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