1. Neuronal Signaling
  2. CaMK

STO-609 

Cat. No.: HY-19805 Purity: >98.0%
Handling Instructions

STO-609 is a selective and cell-permeable inhibitor of the Ca2+/calmodulin-dependent protein kinase kinase (CaM-KK), with Ki values of 80 and 15 ng/mL for recombinant CaM-KKα and CaM-KKβ, respectively.

For research use only. We do not sell to patients.

STO-609 Chemical Structure

STO-609 Chemical Structure

CAS No. : 52029-86-4

Size Price Stock Quantity
Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 92 In-stock
Estimated Time of Arrival: December 31
5 mg USD 84 In-stock
Estimated Time of Arrival: December 31
10 mg USD 144 In-stock
Estimated Time of Arrival: December 31
25 mg USD 288 In-stock
Estimated Time of Arrival: December 31
50 mg USD 528 In-stock
Estimated Time of Arrival: December 31
100 mg USD 888 In-stock
Estimated Time of Arrival: December 31
200 mg   Get quote  
500 mg   Get quote  

* Please select Quantity before adding items.

Customer Review

  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References

Description

STO-609 is a selective and cell-permeable inhibitor of the Ca2+/calmodulin-dependent protein kinase kinase (CaM-KK), with Ki values of 80 and 15 ng/mL for recombinant CaM-KKα and CaM-KKβ, respectively.

IC50 & Target

Ki: 80 ng/mL (CaM-KKα), 15 ng/mL (CaM-KKβ)[1]

In Vitro

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 Ca2+-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)[1].

Solvent & Solubility
In Vitro: 

DMSO : 5.6 mg/mL (17.82 mM; Need ultrasonic and warming)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.1818 mL 15.9089 mL 31.8177 mL
5 mM 0.6364 mL 3.1818 mL 6.3635 mL
10 mM 0.3182 mL 1.5909 mL 3.1818 mL
*Please refer to the solubility information to select the appropriate solvent.
References
Kinase Assay
[2]

CaM-KI (2.5 μg/mL), CaM-KII (0.75 μg/mL), CaM-KIV (9 μg/mL), and mLCK (0.6 μg/mL) are incubated with 40 μM syntide-2 or 50 μM mLC peptide (for mLCK) at 30 °C for 5 min in a solution (25 μL) containing 50 mM HEPES (pH 7.5), 10 mM Mg(Ac)2, 1 mM DTT, 50 μM [γ-32P]ATP (4500 cpm/pmol) with various concentrations of STO-609 (0–10 μg/mL)in Me2SO at a final concentration of 4%) in the presence of 1 mM CaCl2, 2 μM CaM. Protein kinase activity is measured by the phosphocellulose filter method. Specific activities of CaM-KI, CaM-KII, CaM-KIV, and mLCK in the absence of STO-609 are calculated[1]. STO-609 is bound in the ATP-binding pocket of the CaMKKβ KD. The inhibition mechanism of STO-609 is ATP-competitive[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References
Molecular Weight

314.29

Formula

C₁₉H₁₀N₂O₃

CAS No.

52029-86-4

SMILES

O=C(C1=C2C3=C(C4=NC5=CC=CC=C5N4C(C3=CC=C2)=O)C=C1)O

Storage
Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Shipping

Room temperature in continental US; may vary elsewhere

  • Molarity Calculator

  • Dilution Calculator

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass   Concentration   Volume   Molecular Weight *
= × ×

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

Inquiry Online

Your information is safe with us. * Required Fields.

Product name

 

Salutation

Applicant name *

 

Email address *

Phone number *

 

Organization name *

Country or Region *

 

Requested quantity *

Remarks

Bulk Inquiry

Inquiry Information

Product Name:
STO-609
Cat. No.:
HY-19805
Quantity:

STO-609

Cat. No.: HY-19805