Transmembrane And Ubiquitin Like Domain Containing Protein 1 (TMUB1)

Tmub1 encodes for a protein, HOPS/DULP, containing transmembrane domains and a ubiquitin-like domain (UBL) Ubiquitin can be employed to modify proteins by either single or multiple ubiquitin conjugation to mark them for proteasomal destruction, endocytosis and binding to other proteins. Tmub1/HOPS was reported to facilitate the recycling of AMPA receptors into synaptic membrane in cultured primary neurons. Tmub1/HOPS was also found overexpressed during liver regeneration and is an essential constituent of centrosome assembly during cell cycles in culture. Like many UBL domain proteins, the physiological and molecular function of Tmub1 is far from being clear. The resulting mice Tmub1 were put through an extensive battery of assays to discover physiological and behavioral phenotypes.