Qstatin_product_DataBase

Bioactivity	QStatin is a potent and selective inhibitor of SmcR (V. harveyi LuxR homologue) with an EC50 of 208.9 nM, binding tightly to SmcR and changes the flexibility of the protein, thereby altering its transcription regulatory activity. QStatin shows pan-QS (Vibrio quorum sensing) inhibitor activity in diverse Vibrio species and attenuates their virulence in an aquatic host. QStatin may be a sustainable antivibriosis agent useful in aquacultures[1].
Invitro	QStatin (0.001 μM-10 μM; 5 hours) inhibits SmcR activity measured by the RLU level for V. vulnificusWT (pBB1), reveals EC50 of 208.9 nM[1].QStatin (5 μM-50 μM; 16 hours) reduces the activities of SmcR-activated virulence factors (protease and elastase) in V. vulnificus in a dose dependent manner[1]. QStatin (5 μM-50 μM; 16 hours) has no effect on the cellular levels of SmcR, indicating that QStatin does not affect the expression or stability of SmcR[1].
Name	Qstatin
CAS	902688-24-8
Formula	C7H5BrN2O2S2
Molar Mass	293.16
Appearance	Solid
Transport	Room temperature in continental US; may vary elsewhere.
Storage	4°C, protect from light *In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Reference	[1]. Kim BS, et al. QStatin, a Selective Inhibitor of Quorum Sensing in Vibrio Species. MBio. 2018 Jan 30;9(1). pii: e02262-17.

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