Winkowski K, Bruno M E, Montville T J
Department of Food Science, New Jersey Agricultural Experiment Station, Cook College, Rutgers, State University of New Jersey, New Brunswick 08903.
Appl Environ Microbiol. 1994 Nov;60(11):4186-8. doi: 10.1128/aem.60.11.4186-4188.1994.
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.
在单核细胞增生李斯特菌中,乳酸链球菌素可诱导ATP流出,在1分钟内降低细胞内ATP浓度,并在2分钟内耗散质子动力。流出仅占ATP消耗的20%,这表明也发生了ATP水解。ATP流出取决于乳酸链球菌素的浓度,并遵循饱和动力学。这些结果表明,乳酸链球菌素破坏膜通透性屏障的方式更符合孔形成,而不是非特异性洗涤剂样膜去稳定化。