Predicted to enable protein sequestering activity; ubiquitin protein ligase binding activity; and ubiquitin-dependent protein binding activity. Predicted to be involved in several processes, including lysosomal transport; positive regulation of macromolecule metabolic process; and regulation of signal transduction. Predicted to act upstream of or within cellular response to leukemia inhibitory factor. Located in lysosome. Orthologous to human LAPTM5 (lysosomal protein transmembrane 5). [provided by Alliance of Genome Resources, Apr 2022]