Probable role in protein transport. May regulate growth factor-induced mitogenic signaling (By similarity). Interacts with clathrin, SRC and TOLLIP. Ubiquitously expressed. Splicing pattern displays tissue specific variation. The GAT domain mediates interaction with TOLLIP. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Belongs to the TOM1 family.