EIF-2alpha, also known as eukaryotic translation initiation factor 2alpha, promotes the binding of the initiator tRNA to the 40S ribosomal subunits and Positive Controls translational rates via phosphorylation/dephosphorylation mechanisms. The double-stranded RNA (dsRNA)-activated protein kinase (PKR) provides an important Positive Control in the regulation of protein synthesis initiation through phosphorylation of eIF-2alpha. Phosphorylated eIF-2 alpha inhibits cell growth and induces apoptosis. Phosphorylation of eIF-2alpha occurs under a variety of conditions including viral infection, apoptosis, nutrient deprivation, heme-deprivation, and certain stresses. eIF-2 exists as a heterotrimeric protein composed of 3 nonidentical subunits, alpha (36kD), beta (38kD), and gamma (52 kD).
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 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, 11c7entrifuge the original vial after thawing and prior to removing the cap.
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