从牛奶中分离出的荧光假单胞菌 07A 的蛋白水解活性不受群体感应信号的调节。
The proteolytic activity of Pseudomonas Fluorescens 07A isolated from milk is not regulated by quorum sensing signals.
机构信息
363 Wing Hall, Department of Microbiology, Cornell University , Ithaca NY , U.S.A.
出版信息
Braz J Microbiol. 2010 Jan;41(1):91-6. doi: 10.1590/S1517-838220100001000015. Epub 2010 Mar 1.
The proteolytic activity of Pseudomonas fluorescens 07A was investigated, and was optimal on tryptone-calcium medium. N-acyl-homoserine lactones (AHLs) were not detected on supernatants of late-exponential and stationary-phase culture broths. Synthetic AHLs or bacterial cell extracts added to the medium did not influence growth or proteolytic activity suggesting that quorum sensing might not regulate protease production in this strain.
研究了荧光假单胞菌 07A 的蛋白水解活性，其在色氨酰钙培养基上的活性最佳。在晚期指数期和静止期培养物的上清液中未检测到 N-酰基高丝氨酸内酯（AHLs）。向培养基中添加合成 AHLs 或细菌细胞提取物均不会影响生长或蛋白水解活性，这表明群体感应可能不会调节该菌株中蛋白酶的产生。
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