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