PTER (Phosphotriesterase-related protein): PTER is a protein that plays a crucial role in cellular detoxification and regulation of metabolism. As a member of the phosphotriesterase-related protein family, PTER is involved in the breakdown of chemical compounds, including organophosphate pesticides and nerve agents. Its enzymatic activity helps protect cells from chemical damage, and it is also involved in cellular signalling and metabolic processes. Dysregulation of PTER expression or activity can increase susceptibility to chemical toxicity and metabolic disorders.