Transmembrane domain-dependent partitioning of membrane proteins within the endoplasmic reticulum. (Articolo in rivista)

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  • Transmembrane domain-dependent partitioning of membrane proteins within the endoplasmic reticulum. (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1083/jcb.200710093 (literal)
Alternative label
  • Ronchi P; Colombo S; Francolini M; Borgese N (2008)
    Transmembrane domain-dependent partitioning of membrane proteins within the endoplasmic reticulum.
    in The Journal of cell biology; Rockefeller University Press, New York (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ronchi P; Colombo S; Francolini M; Borgese N (literal)
Pagina inizio
  • 105 (literal)
Pagina fine
  • 118 (literal)
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  • A note in \"In this Issue\" (Short proteins got no reason to leave JCB 2008 181:3) described the results of this study (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://jcb.rupress.org/content/181/1/105.short (literal)
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  • 181 (literal)
Rivista
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  • 14 (literal)
Note
  • Scopus (literal)
  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Ronchi P: Istituto di Neuroscienze del CNR e Dipartimento di Farmacologia Medica, Università di Milano; Colombo S: Istituto di Neuroscienze del CNR e Dipartimento di Farmacologia Medica, Università di Milano; Francolini M: Istituto di Neuroscienze del CNR e Dipartimento di Farmacologia Medica, Università di Milano; Borgese N: Istituto di Neuroscienze del CNR e Dipartimento di Farmacologia Medica, Università di Milano; (literal)
Titolo
  • Transmembrane domain-dependent partitioning of membrane proteins within the endoplasmic reticulum. (literal)
Abstract
  • The length and hydrophobicity of the transmembrane domain (TMD) play an important role in the sorting of membrane proteins within the secretory pathway; however, the relative contributions of protein-protein and protein-lipid interactions to this phenomenon are currently not understood. To investigate the mechanism of TMD-dependent sorting, we used the following two C tail-anchored fluorescent proteins (FPs), which differ only in TMD length: FP-17, which is anchored to the endoplasmic reticulum (ER) membrane by 17 uncharged residues, and FP-22, which is driven to the plasma membrane by its 22-residue-long TMD. Before export of FP-22, the two constructs, although freely diffusible, were seen to distribute differently between ER tubules and sheets. Analyses in temperature-blocked cells revealed that FP-17 is excluded from ER exit sites, whereas FP-22 is recruited to them, although it remains freely exchangeable with the surrounding reticulum. Thus, physicochemical features of the TMD influence sorting of membrane proteins both within the ER and at the ER-Golgi boundary by simple receptor-independent mechanisms based on partitioning. (literal)
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