MEK1 antibody

 The mitogen-activated protein (MAP) kinase pathway has been implicated in the actions of many cellular processes including hormones, growth factors and oncogene products (1, 2). The mitogen-activated protein kinase kinase 1 (MEK1 or MAPKK1) is one of the three isoforms of the protein serine/threonine kinase family. The mechanism of MEK1 activation involves protein phosphorylation specifically on serine 218 and 222 by MEK kinase (MEKK) or by autophosphorylation (3, 4). Activation of MEK1 in vivo was also demonstrated through the inhibition of serine/threonine phosphayases by SV40 smal T antigen, an inhibitor of phosphatase PP2A (5). Oncogene products including Raf, Tpl-2 and Ras have been demonstrated to be involved in mediating MEK1 activity (6).

Each vial contains 0.25 ml of anti-serum.

Specificity
α-MEK1 reacts with the MEK1 protein in HeLa nuclear extract by Western Blotting. Recommended dilution range for Western blot analysis: 1:2000-1:5000. Recommended starting dilution: 1:2000.

Storage
Aliquot and store at –20°C.
 
References:
1. Davis, RJ. (1993) J. Biol. Chem. 268, 14553-14556
2. Robbins, DJ. et al., (1994) Adv. Cancer Res. 63, 93-116
3. Xu, S. et al., (1995) Proc. Natl. Acad. Sci. USA 92, 6808-6812
4. Ahn, NG. et al., (1993) Proc. Natl. Acad. Sci. USA 90, 5143-5147
5. Sontag, E. et al., (1993) Cell 75, 887-897
6. Rajalingam, K. et al., (2005) Nat. Cell Biol. 7, 837-843