• 产品描述： QStatin, a Selective Inhibitor of Quorum Sensing in Vibrio Species( SmcR with an EC50 of 208.9 nM).

• 靶点： Antibacterial

• 体外研究：
  Because 377B6 [1-(5-bromothiophene-2-sulfonyl)-1H-pyrazole](QStatin) showed the strongest inhibition of SmcR activity without significant growth attenuation of V. vulnificus. SmcR activity was assessed by measuring the RLU level for V. vulnificus WT (pBB1) in the presence of different concentrations of QStatin, which revealed that the half-maximal effective concentration (EC50) of QStatin was 208.9 nM.

• 细胞实验： The plasmid pBB1 carrying the LuxRVh homologue-activated lux operon was conjugally transferred into the V. vulnificus wild-type (WT) strain, the ΔsmcR mutant, or the ΔluxO mutant. These V. vulnificus reporter strains were grown overnight, diluted 1:1,000 in fresh LBS, and treated with hit molecules. RLU values were calculated every hour. To determine the EC50, QStatin (10^12 to 10^4 M) or 2% DMSO as a control was added to the V. vulnificus WT reporter strain and RLU was measured after 5 h. The percentage of SmcR activity of the sample at a given concentration of QStatin was determined using the following equation: percent SmcR activity = sample RLU/control RLU × 100. The EC50 of QStatin (the concentration reducing the SmcR activity to 50%) was calculated from a plot of the percentages of SmcR activity versus QStatin concentrations using GraphPad Prism 6.0.

• 参考文献：
  1. Kim B S , Jang S Y , Bang Y J , et al. QStatin, a Selective Inhibitor of Quorum Sensing in Vibrio Species[J]. mBio, 2018, 9(1).

• 溶解性： Soluble  in  DMSO

• 保存条件： 2-8℃

• 配置溶液浓度参考：
  

  	1mg	5mg	10mg
  1 mM	3.411 ml	17.056 ml	34.111 ml
  5 mM	0.682 ml	3.411 ml	6.822 ml
  10 mM	0.341 ml	1.706 ml	3.411 ml
  50 mM	0.068 ml	0.341 ml	0.682 ml

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本计算器可帮助您计算出特定溶液中溶质的质量、溶液浓度和体积之间的关系，公式为：

质量 (mg) = 浓度 (mM) x 体积 (mL) x 分子摩尔量 (g/mol)

• pg ng μg mg g kg =
  fM pM nM μM mM M *
  nL μL mL L *