| Sec 34 is implicated in traffic from the endoplasmic reticulum to the Golgi and exists in a complex with GTC 90 and ldlBp . ^^^ Large scale immunoprecipitation of rat liver cytosol with immobilized anti Sec 34 antibodies has co immunoprecipitated GTC 90 and ldlBp , two peripheral Golgi proteins previously shown to exist in separate protein complexes . ^^^ These results suggest that Sec 34 , GTC 90 , and ldlBp / ldlCp are part of the same protein complex ( es ) that regulates diverse aspects of Golgi function , including transport from the ER to the Golgi apparatus . . ^^^ |