Predicted to enable acetylcholine receptor binding activity and acetylcholine receptor inhibitor activity. Predicted to be involved in acetylcholine receptor signaling pathway. Predicted to act upstream of or within several processes, including behavioral fear response; cholinergic synaptic transmission; and negative regulation of protein localization to plasma membrane. Predicted to be located in membrane. Orthologous to human LYPD1 (LY6/PLAUR domain containing 1). [provided by Alliance of Genome Resources, Apr 2022]