Predicted to enable small GTPase binding activity and ubiquitin binding activity. Acts upstream of or within positive regulation of protein catabolic process and protein localization to lysosome. Predicted to be located in endosome; lysosome; and trans-Golgi network. Predicted to be part of protein-containing complex. Is expressed in several structures, including heart; liver; lung; metanephros; and white fat. Orthologous to human GGA3 (golgi associated, gamma adaptin ear containing, ARF binding protein 3). [provided by Alliance of Genome Resources, Apr 2022]