Predicted to enable several functions, including SNAP receptor activity; chloride channel inhibitor activity; and ubiquitin protein ligase binding activity. Involved in endosome to lysosome transport and vesicle fusion. Located in late endosome membrane and lysosomal membrane. Part of SNARE complex. Orthologous to human STX8 (syntaxin 8). [provided by Alliance of Genome Resources, Apr 2022]