Enables 1-alkyl-2-acetylglycerophosphocholine esterase activity. Contributes to platelet-activating factor acetyltransferase activity. Involved in brain development. Located in cytosol. Part of 1-alkyl-2-acetylglycerophosphocholine esterase complex. Orthologous to human PAFAH1B3 (platelet activating factor acetylhydrolase 1b catalytic subunit 3). [provided by Alliance of Genome Resources, Apr 2022]