Predicted to enable gamma-tubulin binding activity and protein C-terminus binding activity. Involved in several processes, including animal organ development; anterograde synaptic vesicle transport; and lysosomal protein catabolic process. Located in cytosol and lysosome. Part of BLOC-1 complex. Is expressed in several structures, including brain; eye; genitourinary system; gut; and spinal cord. Orthologous to human BLOC1S2 (biogenesis of lysosomal organelles complex 1 subunit 2). [provided by Alliance of Genome Resources, Apr 2022]