Predicted to enable SMAD binding activity and transforming growth factor beta receptor binding activity. Predicted to be involved in several processes, including autophagy; endosomal vesicle fusion; and endosome to lysosome transport. Predicted to be located in early endosome. Predicted to be part of CORVET complex. Predicted to be active in cytoplasm and membrane. Orthologous to human TGFBRAP1 (transforming growth factor beta receptor associated protein 1). [provided by Alliance of Genome Resources, Apr 2022]