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吐温80对变形链球菌葡糖基转移酶产生的影响。

Effect of Tween 80 on glucosyltransferase production in Streptococcus mutans.

作者信息

Umesaki Y, Kawai Y, Mutai M

出版信息

Appl Environ Microbiol. 1977 Aug;34(2):115-9. doi: 10.1128/aem.34.2.115-119.1977.

Abstract

Glucan production from sucrose by Streptococcus mutans OMZ 176 was stimulated approximately threefold in the presence of 0.1% Tween 80. When OMZ 176 was grown in a medium containing glucose, the glucosyltransferase level in the medium was also increased about fivefold in the presence of 0.1% Tween 80. The glucosyltransferase level increased in proportion to the logarithm of the concentration of Tween 80 in the glucose medium. Tween 80 affected neither bacterial growth nor the activity of glucosyltransferase. The appearance of glucosyltransferase in the glucose medium was inhibited immediately by chloramphenicol and actinomycin D and, after a lag, by rifampin as well. It was observed that the fatty acid composition of the cells grown with Tween 80 was altered. These results suggest that Tween 80 stimulates glucosyltransferase synthesis either directly, or indirectly by promoting glucosyltransferase secretion.

摘要

在0.1%吐温80存在的情况下,变形链球菌OMZ 176由蔗糖产生葡聚糖的量被刺激增加了约三倍。当OMZ 176在含有葡萄糖的培养基中生长时,在0.1%吐温80存在的情况下,培养基中的葡糖基转移酶水平也增加了约五倍。葡糖基转移酶水平与葡萄糖培养基中吐温80浓度的对数成正比增加。吐温80既不影响细菌生长,也不影响葡糖基转移酶的活性。氯霉素和放线菌素D可立即抑制葡萄糖培养基中葡糖基转移酶的出现,利福平经过一段延迟后也可抑制。观察到在有吐温80的情况下生长的细胞的脂肪酸组成发生了改变。这些结果表明,吐温80要么直接刺激葡糖基转移酶的合成,要么通过促进葡糖基转移酶的分泌间接刺激其合成。

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