SGD Paper Help



Lewis MJ, et al.  (2000) Specific retrieval of the exocytic SNARE Snc1p from early yeast endosomes. Mol Biol Cell 11(1):23-38

Abstract: Many endocytosed proteins in yeast travel to the vacuole, but some are recycled to the plasma membrane. We have investigated the recycling of chimeras containing green fluorescent protein (GFP) and the exocytic SNARE Snc1p. GFP-Snc1p moves from the cell surface to internal structures when Golgi function or exocytosis is blocked, suggesting continuous recycling via the Golgi. Internalization is mediated by a conserved cytoplasmic signal, whereas diversion from the vacuolar pathway requires sequences within and adjacent to the transmembrane domain. Delivery from the Golgi to the surface is also influenced by the transmembrane domain, but the requirements are much less specific. Recycling requires the syntaxins Tlg1p and Tlg2p but not Pep12p or proteins such as Vps4p and Vps5p that have been implicated in late endosome-Golgi traffic. Subtle changes to the recycling signal cause GFP-Snc1p to accumulate preferentially in punctate internal structures, although it continues to recycle to the surface. The internal GFP-Snc1p colocalizes with Tlg1p, and immunofluorescence and immunoelectron microscopy reveal structures that contain Tlg1p, Tlg2p, and Kex2p but lack Pep12p and Sec7p. We propose that these represent early endosomes in which sorting of Snc1p and late Golgi proteins occurs, and that transport can occur directly from them to the Golgi apparatus.

Status: Published Type: Journal Article PubMed ID: 10637288

Topics addressed in this paper

Number of different genes curated to this paper: 15

Jump to Summary Chart for:

  • To find other papers on a gene and topic, click on the colored ball in the appropriate box.
  • displays other papers with information about that topic for that gene.
  • displays other papers in SGD that are associated with that topic.
    The topic is addressed in these papers but does not describe a specific gene or chromosomal feature.
  • To go to the Locus page for a gene, click on the gene name.
Topics Genes linked to topics (#1 - 10 )
COP1 KEX2 PEP12 SEC14 SEC21 SEC23 SEC6 SEC7 SED5 SNC1
Additional Literature blue ball blue ball blue ball blue ball blue ball
Cellular Location blue ball blue ball blue ball blue ball
Function/Process blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Genetic Interactions blue ball
Mutants/Phenotypes blue ball blue ball blue ball blue ball blue ball blue ball
Primary Literature blue ball blue ball blue ball blue ball blue ball
Protein Processing/Modification/Regulation blue ball
Strains/Constructs blue ball blue ball blue ball blue ball blue ball
Substrates/Ligands/Cofactors blue ball blue ball blue ball

Topics Genes linked to topics (#11 - 15 )
TLG1 TLG2 VPS4 VPS45 VPS5
Cellular Location blue ball blue ball blue ball blue ball
Function/Process blue ball blue ball blue ball blue ball
Fungal Related Genes/Proteins blue ball
Mutants/Phenotypes blue ball
Primary Literature blue ball blue ball blue ball blue ball blue ball
Protein-protein Interactions blue ball
Strains/Constructs blue ball
Substrates/Ligands/Cofactors blue ball blue ball blue ball blue ball blue ball

Author Searches

To find contact information or other publications by the authors of this paper, follow these three steps:
  1. (1) Choose an author,
  2. (2) Choose a search parameter,
  3. (3) Click to implement