Predicted to enable endopeptidase activator activity and protein-macromolecule adaptor activity. Involved in locomotory behavior. Predicted to be located in transport vesicle. Predicted to be part of gamma-secretase complex. Predicted to be active in endoplasmic reticulum. Predicted to be integral component of membrane. Human ortholog(s) of this gene implicated in coronary artery disease. Orthologous to human APH1B (aph-1 homolog B, gamma-secretase subunit). [provided by Alliance of Genome Resources, Apr 2022]