Anti-Kos1 (Kinase of Embryonic Stem Cells, CD38 Negative Kinase 1, EC 2.7.10.2, MGC46193, Non-recept

Kinase of embryonic stem cells (Kos1) is a nonreceptor protein tyrosine kinase (NRPTK) and a new member of the Ack family of NRPTKs. Kos1 is a ubiquitously expressed 47kD protein with autotyrosine kinase activity that is developmentally regulated during embryogenesis. Kos1 is also upregulated following IL3 withdrawal from factor-dependent murine NSF/N1.H7 cells that undergo apoptosis, suggesting a role in growth inhibition. Data support a negative regulatory role for Kos1 in regulating the Ras-Raf1-MAPK growth pathway by a mechanism that requires its autotyrosine kinase activity. Applications: Suitable for use in Western Blot. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot Store at -20°C. Aliquots are stable for at least 12 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.