Displays low metallophosphoesterase activity (in vitro) (PubMed:19004815, PubMed:21824479). May play a role in the development of the nervous system (Probable). Inhibited by nmolar levels of AMP and GMP. Homodimer. Expressed in fetal brain (at protein level). detected in fetal and adult brain. This protein has a low affinity for cofactor and demonstrates very restricted substrate specificity. The enzyme may need additional interacting proteins to show full activity, or may be losing its activity and acquiring the role of a scaffolding protein. Belongs to the UPF0046 family. Truncated C-terminus.