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M5795

Sigma-Aldrich

Anti-MAP Kinase Kinase (MEK, MAPKK) antibody produced in rabbit

whole antiserum

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Synonym(s):
Anti-MAPKK, Anti-MEK
MDL number:

biological source

rabbit

conjugate

unconjugated

antibody form

whole antiserum

antibody product type

primary antibodies

clone

polyclonal

mol wt

antigen 45 kDa (MEK1a)
antigen 46 kDa (MEK2)

contains

15 mM sodium azide

species reactivity

mouse, human, rat

technique(s)

microarray: suitable
western blot: 1:20,000 using rat brain extract and mouse NIH 3T3 fibroblast lysate

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

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This Item
M5670M3682M3807
conjugate

unconjugated

conjugate

unconjugated

conjugate

unconjugated

conjugate

unconjugated

antibody form

whole antiserum

antibody form

whole antiserum

antibody form

purified from hybridoma cell culture

antibody form

purified from hybridoma cell culture

clone

polyclonal

clone

polyclonal

clone

ERK-PY193, monoclonal

clone

ERK-NP2, monoclonal

mol wt

antigen 45 kDa (MEK1a), antigen 46 kDa (MEK2)

mol wt

antigen ERK-2 42 kDa, antigen, ERK-1 44 kDa

mol wt

antigen, ERK-1 44 kDa, antigen, ERK-2 42 kDa

mol wt

antigen, ERK-1 44 kDa, antigen, ERK-2 42 kDa

species reactivity

mouse, human, rat

species reactivity

human, rat, mouse

species reactivity

rat, human

species reactivity

human, rat

General description

MAP kinase kinase (MAPKK, MEK) consists of three different isoforms with a high degree of homology between them, MEK-1a (45 kDa), MEK-1b (41 kDa), and MEK-2 (46 kDa). MEK isoforms are generally expressed, in the central nervous system, thymus, spleen, heart, lung, kidney. In addition, it is also expressed at high levels in PC12 cells and in fibroblasts.

Specificity

Reacts with MEK-1a and MEK-2. Staining of MEK-1a and MEK-2 is specifically inhibited with MEK-1 peptide (34-48), but not with MAP kinase peptide (317-399) corresponding to subdomain XI of ERK1.

Immunogen

synthetic peptide corresponding to amino acids 34-48 of human MAP kinase kinase 1 (MEK-1).

Application

Anti-MAP Kinase Kinase (MEK, MAPKK) antibody produced in rabbit has been used in immunoblotting and for analysis of signaling pathways.

Biochem/physiol Actions

Antibodies that react specifically with MEK may be used to study the specific activation requirements, differential tissue expression and intracellular localization of MEK in normal and neoplastic tissue.
MAP Kinase Kinase (MAPKK, MEK1 and MEK2) belong to a family of enzymes that activates their substrate by dual phosphorylation at threonine and tyrosine residues. MEK1 and MEK2 have 86% homology in their catalytic domain. Activation of MEK1/2 is mediated in mitogen-stimulated cells by Raf-1 kinase. MEK1/2 then activates ERK1/2 leading to the activation of several downstream targets that contribute to cell proliferation, apoptosis and motility. In addition to ERK1/2, there may be non-catalytic effectors of MEK1/2. MEK isoforms appear to be widely expressed in the central nervous system, thymus, spleen, heart, lung, and kidney. Active forms of MEK1/2 are sufficient for the transformation of NIH3T3 cells of the differentiation of PC-12 cells.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class Code

10 - Combustible liquids


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Kazi M Ahmed et al.
Molecular cancer research : MCR, 4(12), 945-955 (2006-12-26)
The molecular mechanism by which tumor cells increase their resistance to therapeutic radiation remains to be elucidated. We have previously reported that activation of nuclear factor-kappaB (NF-kappaB) is causally associated with the enhanced cell survival of MCF+FIR cells derived from
WNK2 modulates MEK1 activity through the Rho GTPase pathway
Moniz S, et al.
Cellular Signalling, 20(10), 1762-1768 (2008)
Transcriptional and metabolic rewiring of colorectal cancer cells expressing the oncogenic KRAS G13D mutation
Charitou T, et al.
British Journal of Cancer, 20(10), 1-1 (2019)
S J Mansour et al.
Science (New York, N.Y.), 265(5174), 966-970 (1994-08-12)
Mitogen-activated protein (MAP) kinase kinase (MAPKK) activates MAP kinase in a signal transduction pathway that mediates cellular responses to growth and differentiation factors. Oncogenes such as ras, src, raf, and mos have been proposed to transform cells by prolonging the
Jan Pinkas et al.
Cancer research, 62(16), 4781-4790 (2002-08-17)
Activation of the mitogen-activated protein/extracellular signal-regulated kinase kinase (MEK)-mitogen-activated protein kinase (MAPK) pathway is a frequent event in tumorigenesis, and analysis of human breast carcinomas demonstrates that 25-50% of these tumors express elevated levels of activated MAPK1/2. However, a direct

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