PPP1CA and neoplasm: Additionally, proteins involved in the regulation of the cell cycle (e.g., ATM and STAT3), cell proliferation (e.g., LYN and SRRT), metabolism (e.g., GOT2, PPP1CA, and PYGB), and the regulation of Ca2+ flux (e.g., ANXA6 and CALM1) were also found phosphorylated in the tumor cells.