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328000

Sigma-Aldrich

ERK Activation Inhibitor Peptide I, Cell-Permeable

The ERK Activation Inhibitor Peptide I, Cell-Permeable controls the biological activity of ERK. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

Synonym(s):

ERK Activation Inhibitor Peptide I, Cell-Permeable, Ste-MEK1₁₃, Ste-MPKKKPTPIQLNP-NH₂, Erk Inhibitor IV

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About This Item

Empirical Formula (Hill Notation):
C86H153N19O17S
Molecular Weight:
1757.32
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

100

Assay

≥95% (HPLC)

form

lyophilized solid

potency

2.5 μM IC50

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)
protect from light

color

white

solubility

water: 1 mg/mL
DMSO: 5 mg/mL

shipped in

wet ice

storage temp.

−20°C

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.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
MEK
Product does not compete with ATP.
Reversible: yes

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Sequence

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

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.

Other Notes

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

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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