Predicted to enable lipid binding activity. Predicted to be involved in regulation of epidermal growth factor receptor signaling pathway; viral budding; and virus maturation. Predicted to act upstream of or within protein transport. Predicted to be located in several cellular components, including cytosol; early endosome; and nucleus. Predicted to be part of ESCRT I complex. Predicted to be active in late endosome. Is expressed in 2nd branchial arch and 3rd branchial pouch. Orthologous to human MVB12B (multivesicular body subunit 12B). [provided by Alliance of Genome Resources, Apr 2022]