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MAP3K3 / MEKK3

mitogen-activated protein kinase kinase kinase 3

MAP3K3 / MEKK3 is a 626-amino acid polypeptide that is 96.5% identical to mouse Mekk3. Its catalytic domain is closely related to those of several other kinases, including mouse Mekk2, tobacco NPK, and yeast Ste11. Northern blot analysis revealed a 4.6-kb transcript that appears to be ubiquitously expressed. This protein directly regulates the stress-activated protein kinase (SAPK) and extracellular signal-regulated protein kinase (ERK) pathways by activating SEK and MEK1/2 respectively; it does not regulate the p38 pathway. In cotransfection assays, it enhanced transcription from a nuclear factor kappa-B (NFKB)-dependent reporter gene, consistent with a role in the SAPK pathway. Alternatively spliced transcript variants encoding distinct isoforms have been observed.

Gene Name: mitogen-activated protein kinase kinase kinase 3
Family/Subfamily: Protein Kinase , MAP3K
Synonyms: MAP3K3, MAPK/ERK kinase kinase 3, MAPKKK3, MEK kinase 3, MEKK3, MAP/ERK kinase kinase 3, MEKK 3
Target Sequences: NM_002401 NP_002392.2 Q99759

Publications (2)

1
Phosphorylation of MEKK3 at threonine 294 promotes 14-3-3 association to inhibit nuclear factor kappaB activation. Matitau AE, Scheid MP. The Journal of biological chemistry. 2008 283:13261-8. (IP) [PubMed:18308725]
2
Expression profiles of protein tyrosine kinase genes in human embryonic stem cells. Son MY, Kim J, Han HW, Woo SM, Cho YS, Kang YK, Han YM. Reproduction (Cambridge, England). 2008 136:423-32. (WB) [PubMed:18583472]

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Proteins (5)
Over-Expression Lysate (2)
Recombinant (3)
MAP3K3 / MEKK3 (5)
No (5)
GST (1)
GST, N-terminus (1)
His, N-Terminal (1)
Myc-DDK (Flag) (2)
Human (4)
293T Cells (1)
E. coli (1)
HEK 293 Cells (1)
Wheat Germ Extract (2)
Purified (1)
MAP3K3 / MEKK3 Protein - 12.5% SDS-PAGE Stained with Coomassie Blue.
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Wheat Germ Extract
GST, N-terminus
10 µg/$479; 25 µg/$670
MAP3K3 / MEKK3 Protein - Western validation with an anti-DDK antibody * L: Control HEK293 lysate R: Over-expression lysate
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293T Cells
Myc-DDK (Flag)
70.7 kDa
20 µg/$150
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Wheat Germ Extract
GST
35.64 kDa
10 µg/$479; 25 µg/$670
MAP3K3 / MEKK3 Protein
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E. coli
His, N-Terminal
70.7 kDa
50 µg/$419
MAP3K3 / MEKK3 Protein - Western validation with an anti-DDK antibody * L: Control HEK293 lysate R: Over-expression lysate
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HEK 293 Cells
Myc-DDK (Flag)
70.7 kDa
100 µg/$494
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For RESEARCH USE ONLY. Intended for use by laboratory professionals. Not intended for human diagnostic or therapeutic purposes.

The data on this page has been compiled from LifeSpan internal sources, the National Center for Biotechnology Information (NCBI), and The Universal Protein Resource (UniProt).