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Technical Data Sheet

TK6990

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TRPM7 Phospho-Regulation
Antibody Sampler Kit
Price

$455

Kit Summary
The TRPM7 phospho-regulation antibody sampler kit includes phospho-specific antibodies for detection of the phosphorylation of Ser-1493, Ser-1513, and Ser-1569 relative to total TRPM7 expression levels. The kit includes rabbit polyclonal and mouse monoclonal antibodies to TRPM7 for examining total expression level of TRPM7.
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Western blot image of human autophosphorylated TRPM7 C-terminal kinase domain (lanes 1-6). The blot was treated with lambda phosphatase to dephosphorylate TRPM7 phosphosites (lanes 2, 4, & 6). The blot was probed with rabbit polyclonals anti-TRPM7 (Ser-1513) phospho-specific (lanes 1 & 2), anti-TRPM7 (a.a.1484-1497) TP5691 antibody (lanes 3 & 4), or anti-TRPM7 (Ser-1493) phospho-specific (lanes 5 & 6).

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Western blot image of TRPM7 expression in human MCF-7 cell lysate. The blot was probed with mouse monoclonal anti-TRPM7 (Extracellular region) M573 at a dilution of 1:250.

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Background
The transient receptor potential melastatin (TRPM) subfamily of cation-permeable TRP channels is ubiquitously expressed in mammalian tissues. This family includes TRPM1-8. In addition to acting as a calcium-permeant channel, TRPM6 and TRPM7 possess an inherent serine/threonine kinase activity. TRPM7 specifically is involved with cellular magnesium homeostasis and neurotransmitter release. Due to the magnesium inhibition, TRPM7’s ion channel activity is very low. TRPM7 has been implicated in cell proliferation and migration during cancer progression, and its expression levels correlate with prognosis in breast cancer. TRPM7 kinase activation leads to massive autophosphorylation of the C-terminal region, including phosphorylation of Ser-1493, Ser-1513, and Ser-1569. Both Ser-1513 and Ser-1569 phosphorylation is required for kinase activity, and phosphorylation of Ser-1513 may inhibit Caspase-mediated cleavage of the C-terminal tail. Thus, TRPM7 is a multifunctional transmembrane protein with roles in cell signaling, proliferation, migration, and death.

Background References
Masayuki, M. et al. (2005) J of Bio Chem 280(21): 20793
Masayuki, M. et al. (2005) J of Bio Chem 280(21): 20793
Clark, K. et al. (2008) PLoS ONE 3(3): e1876
Desai, BN. et al. (2012) Dev. Cell. 22(6): 1149
Park, HS, et al. (2014) Korean J Phys Pharm. 18(1):15-23.
Buffer and Storage
Rabbit polyclonal and mouse monoclonal antibodies are supplied in phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store all at –20°C. Stable for 1 year.
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