Aryldialkylphosphatase

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Acts on organophosphorus compounds (such as paraoxon) including esters of phosphonic and phosphinic acids. Inhibited by chelating agents; requires divalent cations for activity. Previously regarded as identical with EC 3.1.1.2 Arylesterase [EC 3.1.8.1 created 1989] (from IUBMB Enzyme Nomenclature).

**Synonyms:** - Aryltriphosphatase - Aryltriphosphate dialkylphosphohydrolase - Esterase B1 - Esterase E4 - OPA anhydrase - OPH - Paraoxon esterase - Pirimiphos-methyloxon esterase