Human/Mouse/Rat MEK1 Antibody

Catalog # Availability Size / Price Qty
Detection of Human/Mouse/Rat MEK1 by Western Blot.
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Product Details
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Human/Mouse/Rat MEK1 Antibody Summary

Species Reactivity
Human, Mouse, Rat
Detects human, mouse, and rat MEK1 in Western blots. In Western blots, no crossreactivity with recombinant human MEK2 is observed.
Monoclonal Mouse IgG2A Clone # 239421
Protein A or G purified from hybridoma culture supernatant
E. coli-derived recombinant human MEK1
Lys2-Val393 (Ser218Asp, Ser222Asp)
Accession # Q02750
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.5 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Human/Mouse/Rat MEK1 antibody by Western Blot. View Larger

Detection of Human/Mouse/Rat MEK1 by Western Blot. Western blot shows lysates of U937 human histiocytic lymphoma cell line, HepG2 human hepatocellular carcinoma cell line, DU145 human prostate carcinoma cell line, and TS1 mouse helper T cell line. PVDF membrane was probed with 0.5 µg/mL Mouse Anti-Human/ Mouse/Rat MEK1 Monoclonal Antibody (Catalog # MAB2079) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). For additional reference, recombinant human MEK1 and Recombinant Human Active MEK2 (Catalog # 2855-KS) (5 ng/lane) were included. A specific band for MEK1 was detected at approximately 45 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 3.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: MEK1

Mitogen-Activated Protein Kinase Kinase 1 (MEK1 or MAP2K1), also known as MKK1, belongs to the family of STE kinases. Both MEK1 and the related MEK2 aredual‑specificity kinases, phosphorylating and activating the mitogen-activated protein kinases ERK1 and ERK2 at T and Y positions within the phosphoacceptor sequence T-E-Y. Activation of MEK1 by Raf occurs through phosphorylation at S218 and S222.

Long Name
Mitogen-activated Protein Kinase Kinase 1
Entrez Gene IDs
5604 (Human); 26395 (Mouse)
Alternate Names
dual specificity mitogen-activated protein kinase kinase 1; ERK activator kinase 1; MAP kinase kinase 1; MAP2K1; MAPK/ERK kinase 1; MAPKK1; MEK1; MEK1MAPKK 1; mitogen-activated protein kinase kinase 1; MKK1; MKK1MEK 1; PRKMK1EC; protein kinase, mitogen-activated, kinase 1 (MAP kinase kinase 1)

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Isotype Controls

Mouse IgG2A Isotype Control

Reconstitution Buffers

Secondary Antibodies

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