Expression and Purification of p70 (∆NH

An essential modulator of cell growth and division is the evolutionarily conserved kinase (S6K1). It is triggered by certain stimulants, including amino acids, insulin, and other growth hormones. The Akt/phosphatidylinositol 3-kinase pathway's downstream effector, the serine/threonine kinase S6K1, is consistently activated in a variety of cancer types. Rho family guanosine triphosphate (GTPase) activation and actin filament cross-linking are two of S6K1's roles. The p70 (∆2-146/∆CT104) S6K is a truncated variant of p70S6 kinase, created by removing 146 amino acids from the N-terminal and 104 amino acids from the C-terminal end of the original protein, resulting in a total of 275 amino acids. The p70 (∆2-146/∆CT104) S6K was effectively expressed in the E. coli BL21 (DE3)pLysS strain after being cloned in E. coli DH5α. A rabbit polyclonal anti-GST antibody had been employed during Western blot analysis throughout the protein's production and purification process. Protein purification was achieved by affinity chromatography using glutathione resin-agarose beads, and chromatography onto a spin concentration column was performed. Rabbit polyclonal anti-(p70S6Kinase and GST) antibodies confirmed the presence of the purified protein.