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细菌素肠膜菌素Y105对单核细胞增生李斯特菌和线粒体的膜通透化作用

Membrane permeabilization of Listeria monocytogenes and mitochondria by the bacteriocin mesentericin Y105.

作者信息

Maftah A, Renault D, Vignoles C, Héchard Y, Bressollier P, Ratinaud M H, Cenatiempo Y, Julien R

机构信息

Institut de Biotechnologie, Faculté des Sciences, Limoges, France.

出版信息

J Bacteriol. 1993 May;175(10):3232-5. doi: 10.1128/jb.175.10.3232-3235.1993.

Abstract

Mesentericin Y105, a bacteriocin produced by a Leuconostoc mesenteroides strain, dissipates the plasma membrane potential of Listeria monocytogenes and inhibits the transport of leucine and glutamic acid. It also induces an efflux of preaccumulated amino acids from cells. In addition, the bacteriocin uncouples mitochondria by increasing state 4 respiration and decreasing state 3 respiration. The bacteriocin inhibits ATP synthase and adenine nucleotide translocase of the organelle while the affinity of ADP for its carrier is not modified. The results suggest that mesentericin Y105 acts by inducing, directly or indirectly, pore formation in the energy-transducing membranes, especially those of its natural target.

摘要

肠膜明串珠菌素Y105是由肠系膜明串珠菌菌株产生的一种细菌素,它可消除单核细胞增生李斯特菌的质膜电位,并抑制亮氨酸和谷氨酸的转运。它还能诱导细胞内预先积累的氨基酸外流。此外,该细菌素通过增加4态呼吸并降低3态呼吸来解偶联线粒体。该细菌素抑制该细胞器的ATP合酶和腺嘌呤核苷酸转位酶,而ADP对其载体的亲和力未发生改变。结果表明,肠膜明串珠菌素Y105的作用机制是直接或间接诱导能量转换膜,尤其是其天然靶标的能量转换膜形成孔道。

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