A large complex that acts as a tethering factor involved in transporting vesicles from the ER through the Golgi to the plasma membrane. A TRAPP (transport protein particle) complex has a core set of proteins which are joined by specific subunits depending on the cellular component where a given TRAPP complex is active. [ GOC:bhm GOC:vw http://www.ncbi.nlm.nih.gov/pubmed/22669257 ]