Myosin Light Chain Kinase Inhibitor Peptide 18-Calbiochem

C₆₀H₁₀₅N₂₃O₁₁

1324.62

A highly basic, cell-permeable, nonapeptide that acts as a selective Myosin Light Chain Kinase (MLCK) inhibitor (IC₅₀ = 50 nM). The inhibition is competitive with respect to the peptide substrate (K_i = 52 nM) and displays a mixed mode of inhibition with respect to ATP. Does not interfere with kinase activation by calmodulin (CaM), nor does it inhibit the activities of CaMKII and PKA.
A highly basic, cell-permable, nonapeptide that acts as a selective myosin light chain kinase (MLCK) inhibitor (IC₅₀ = 50 nM). Does not block calmodulin (CaM) or inhibit the kinase activities of Ca²⁺/calmodulin kinase II (CaMKII) or protein kinase A (PKA). Inhibition is competitive with respect to substrate (K_i = 52 nM). Displays mixed mode inhibition with respect to ATP.

Target IC₅₀: 50 nM against MLCK
Product does not compete with ATP.
Primary Target
Mlck
Cell permeable: yes
Reversible: no

Toxicity: Standard Handling (A)

H-Arg-Lys-Lys-Tyr-Lys-Tyr-Arg-Arg-Lys-NH₂

Supplied as a trifluoroacetate salt.

Following reconstitution aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Zolotarevsky, Y., et al. 2002. Gastroenterology123, 163.
Lukas, T.J., et al. 1999. J. Med. Chem.42, 910.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

100

≥97% (HPLC)

lyophilized solid

Calbiochem^®

OK to freeze
desiccated (hygroscopic)

white

water: 1 mg/mL
DMSO: 5 mg/mL

wet ice

−20℃

5 mg in Plastic ampoule
Packaged under inert gas

11 - Combustible Solids

WGK 1