STO-609 是选择性和细胞可渗透的 CaM-KK 抑制剂，对重组 CaM-KKα 和 CaM-KKβ 的K_i值分别为 80 和 15 ng/mL。STO-609 抑制 Hela 细胞溶解物中的 AMP 活化蛋白激酶激酶 (AMPKK) 活性，IC₅₀ 值为 ~0.02 g/ml。

STO-609 is a selective and cell-permeable inhibitor of the Ca/calmodulin-dependent protein kinase kinase (CaM-KK), with K i values of 80 and 15 ng/mL for recombinant CaM-KKα and CaM-KKβ, respectively. STO-609 inhibits AMP-activated protein kinase kinase (AMPKK) activity in HeLa cell lysates with an IC 50 ~0.02 g/ml.

Solid

Ki: 80 ng/mL (CaM-KKα), 15 ng/mL (CaM-KKβ)

STO-609 inhibits the activities of recombinant CaM-KKα and CaM-KKβ isoforms, with Ki values of 80 and 15 ng/mL, respectively, and also inhibits their autophosphorylation activities. STO-609 is highly selective for CaM-KK without any significant effect on the downstream CaM kinases (CaM-KI and -IV), and the IC50 value of the compound against CaM-KII is 10 μg/mL. STO-609 inhibits constitutively active CaM-KKα as well as the wild-type enzyme. In transfected HeLa cells, STO-609 suppresses the Ca-induced activation of CaM-KIV in a dose-dependent manner. STO-609 significantly reduces the endogenous activity of CaM-KK in SH-SY5Y neuroblastoma cells at a concentration of 1μg/mL (80% inhibitory rate). has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moistur In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

[1]. Tokumitsu H, et al. STO-609, a specific inhibitor of the Ca(2+)/calmodulin-dependent protein kinase kinase. J Biol Chem. 2002 May 3;277(18):15813-8.
[2]. Kukimoto-Niino M, et al. Crystal structure of the Ca/calmodulin-dependent protein kinase kinase in complex with the inhibitor STO-609. J Biol Chem. 2011 Jun 24;286(25):22570-9.

In Vitro: DMSO : 6.25 mg/mL (19.89 mM; ultrasonic and warming and heat to 80°C)DMF : 5.56 mg/mL (17.69 mM; Need ultrasonic)H₂O : < 0.1 mg/mL (insoluble)