Biochem/physiol Actions

Reversible: yes

Product does not compete with ATP.

Cell permeable: yes

Primary TargetMEK

General description

A cell-permeable and reversible stearated 13-amino acid peptide corresponding to the N-terminus of MEK1 (MAPKK) that acts as a specific inhibitor of ERK activation and blocks the transcriptional activity of Elk1. Selectively binds to ERK2 and prevents its interaction with MEK (IC₅₀ = 2.5 µM). Potently blocks ERK activation in PMA-stimulated NIH 3T3 cells and NGF-treated PC12 cells (IC₅₀ = 13 µM). Does not affect the activation of JNKs or p38.

A cell-permeable, reversible, and stearated, 13-amino acid peptide corresponding to the N-terminus of MAPK/ERK kinase (MEK). Acts as a specific inhibitor of ERK activation and blocks the transcriptional activity of ELK1. Selectively binds to ERK2 and prevents its interaction with MEK (IC₅₀ = 2.5 µM). Shown to block ERK activity in PMA-stimulated NIH3T3 cells and NGF-treated PC12 cells (IC₅₀ = 13 µM). Does not affect the activation of either JNKs or p38 MAP kinase.

Legal Information

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

Other Notes

Kelemen, B.R., et al. 2002. J. Biol. Chem.277, 8741.

Packaging

1 mg in Plastic ampoule

Packaged under inert gas

Physical form

Supplied as a trifluoroacetate salt.

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Sequence

Ste-Met-Pro-Lys-Lys-Lys-Pro-Thr-Pro-Ile-Gln-Leu-Asn-Pro-NH₂ (Ste = stearated)

Warning

Toxicity: Standard Handling (A)