PTER (Phosphotriesterase-related protein): PTER is a protein that plays a crucial role in cellular detoxification and metabolism regulation. As a member of the phosphotriesterase-related protein family, PTER participates in breaking down 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 vulnerability to chemical toxicity and metabolic disturbances.