Tumor susceptibility gene 101 protein (TSG101)

Part of the ESCRT-I complicated, a regulator of vesicular trafficking process. Binds to ubiquitinated cargo proteins and is required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies (MVBs).

Mediates the association between the ESCRT-0 and ESCRT-I complicated. Required for completion of cytokinesis; the function requires CEP55.