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  • Title: Overexpression of TGN38/41 leads to mislocalisation of gamma-adaptin.
    Author: Reaves B, Banting G.
    Journal: FEBS Lett; 1994 Sep 12; 351(3):448-56. PubMed ID: 8082813.
    Abstract:
    TGN38 and TGN41 are isoforms of a monotopic integral membrane protein which recycles between the trans Golgi network (TGN) and the cell surface, but which, at steady state, is predominantly located in the TGN. Full-length and truncated versions of rat TGN38/41 have been expressed in monkey (COS) and human (Heb7a) cells under the control of the heavy metal inducible Metallothionein IIA promoter. This has allowed the regulated expression of TGN38/41 protein constructs to different levels in the transfected cells. These studies show that (i) controlled overexpression of TGN38/41 results in mislocalisation to parts of the endocytic pathway, (ii) a truncated version of TGN38/41, lacking the cytoplasmic domain, remains in the TGN, and (iii) there is a direct or indirect interaction between the cytoplasmic domain of TGN38/41 and gamma-adaptin.
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