The yeast v-SNARE Vti1p mediates two vesicle transport pathways through interactions with the t-SNAREs Sed5p and Pep12p

Membrane traffic in eukaryotic cells requires that specific v-SNAREs on transport vesicles interact with specific t-SNAREs on target membranes. We identified a novel Saccharomyces cerevisiae v-SNARE (Vti1p) encoded by the essential gene, VTI1. Vti1p interacts with the prevacuolar t-SNARE Pep12p to d...

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Veröffentlicht in:The Journal of cell biology 1997-06, Vol.137 (7), p.1511-1524
Hauptverfasser: Von Mollard, G.F. (University of Oregon, Eugene, OR.), Nothwehr, S.F, Stevens, T.H
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container_issue 7
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container_title The Journal of cell biology
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creator Von Mollard, G.F. (University of Oregon, Eugene, OR.)
Nothwehr, S.F
Stevens, T.H
description Membrane traffic in eukaryotic cells requires that specific v-SNAREs on transport vesicles interact with specific t-SNAREs on target membranes. We identified a novel Saccharomyces cerevisiae v-SNARE (Vti1p) encoded by the essential gene, VTI1. Vti1p interacts with the prevacuolar t-SNARE Pep12p to direct Golgi to prevacuolar traffic. vti1-1 mutant cells missorted and secreted the soluble vacuolar hydrolase carboxypeptidase Y (CPY) rapidly and reversibly when vti1-1 cells were shifted to the restrictive temperature. However, overexpression of Pep12p suppressed the CPY secretion defect exhibited by vti1-1 cells at 36 degrees C. Characterization of a second vti1 mutant, vti1-11, revealed that Vti1p also plays a role in membrane traffic at a cis-Golgi stage. vti1 -11 mutant cells displayed a growth defect and accumulated the ER and early Golgi forms of both CPY and the secreted protein invertase at the nonpermissive temperature. Overexpression of the yeast cis-Golgi t-SNARE Sed5p suppressed the accumulation of the ER form of CPY but did not lead to CPY transport to the vacuole in vti1-11 cells. Overexpression of Sed5p allowed growth in the absence of Vti1p. In vitro binding and coimmunoprecipitation studies revealed that Vti1p interacts directly with the two t-SNAREs, Sed5p and Pep12p. These data suggest that Vti1p plays a role in cis-Golgi membrane traffic, which is essential for yeast viability, and a nonessential role in the fusion of Golgi-derived vesicles with the prevacuolar compartment. Therefore, a single v-SNARE can interact functionally with two different t-SNAREs in directing membrane traffic in yeast
doi_str_mv 10.1083/jcb.137.7.1511
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(University of Oregon, Eugene, OR.) ; Nothwehr, S.F ; Stevens, T.H</creator><creatorcontrib>Von Mollard, G.F. (University of Oregon, Eugene, OR.) ; Nothwehr, S.F ; Stevens, T.H</creatorcontrib><description>Membrane traffic in eukaryotic cells requires that specific v-SNAREs on transport vesicles interact with specific t-SNAREs on target membranes. We identified a novel Saccharomyces cerevisiae v-SNARE (Vti1p) encoded by the essential gene, VTI1. Vti1p interacts with the prevacuolar t-SNARE Pep12p to direct Golgi to prevacuolar traffic. vti1-1 mutant cells missorted and secreted the soluble vacuolar hydrolase carboxypeptidase Y (CPY) rapidly and reversibly when vti1-1 cells were shifted to the restrictive temperature. However, overexpression of Pep12p suppressed the CPY secretion defect exhibited by vti1-1 cells at 36 degrees C. Characterization of a second vti1 mutant, vti1-11, revealed that Vti1p also plays a role in membrane traffic at a cis-Golgi stage. vti1 -11 mutant cells displayed a growth defect and accumulated the ER and early Golgi forms of both CPY and the secreted protein invertase at the nonpermissive temperature. Overexpression of the yeast cis-Golgi t-SNARE Sed5p suppressed the accumulation of the ER form of CPY but did not lead to CPY transport to the vacuole in vti1-11 cells. Overexpression of Sed5p allowed growth in the absence of Vti1p. In vitro binding and coimmunoprecipitation studies revealed that Vti1p interacts directly with the two t-SNAREs, Sed5p and Pep12p. These data suggest that Vti1p plays a role in cis-Golgi membrane traffic, which is essential for yeast viability, and a nonessential role in the fusion of Golgi-derived vesicles with the prevacuolar compartment. 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(University of Oregon, Eugene, OR.)</creatorcontrib><creatorcontrib>Nothwehr, S.F</creatorcontrib><creatorcontrib>Stevens, T.H</creatorcontrib><title>The yeast v-SNARE Vti1p mediates two vesicle transport pathways through interactions with the t-SNAREs Sed5p and Pep12p</title><title>The Journal of cell biology</title><addtitle>J Cell Biol</addtitle><description>Membrane traffic in eukaryotic cells requires that specific v-SNAREs on transport vesicles interact with specific t-SNAREs on target membranes. We identified a novel Saccharomyces cerevisiae v-SNARE (Vti1p) encoded by the essential gene, VTI1. Vti1p interacts with the prevacuolar t-SNARE Pep12p to direct Golgi to prevacuolar traffic. vti1-1 mutant cells missorted and secreted the soluble vacuolar hydrolase carboxypeptidase Y (CPY) rapidly and reversibly when vti1-1 cells were shifted to the restrictive temperature. However, overexpression of Pep12p suppressed the CPY secretion defect exhibited by vti1-1 cells at 36 degrees C. Characterization of a second vti1 mutant, vti1-11, revealed that Vti1p also plays a role in membrane traffic at a cis-Golgi stage. vti1 -11 mutant cells displayed a growth defect and accumulated the ER and early Golgi forms of both CPY and the secreted protein invertase at the nonpermissive temperature. Overexpression of the yeast cis-Golgi t-SNARE Sed5p suppressed the accumulation of the ER form of CPY but did not lead to CPY transport to the vacuole in vti1-11 cells. Overexpression of Sed5p allowed growth in the absence of Vti1p. In vitro binding and coimmunoprecipitation studies revealed that Vti1p interacts directly with the two t-SNAREs, Sed5p and Pep12p. These data suggest that Vti1p plays a role in cis-Golgi membrane traffic, which is essential for yeast viability, and a nonessential role in the fusion of Golgi-derived vesicles with the prevacuolar compartment. 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(University of Oregon, Eugene, OR.)</creator><creator>Nothwehr, S.F</creator><creator>Stevens, T.H</creator><general>Rockefeller University Press</general><general>The Rockefeller University Press</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QP</scope><scope>7QR</scope><scope>7TK</scope><scope>7TM</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>19970630</creationdate><title>The yeast v-SNARE Vti1p mediates two vesicle transport pathways through interactions with the t-SNAREs Sed5p and Pep12p</title><author>Von Mollard, G.F. (University of Oregon, Eugene, OR.) ; Nothwehr, S.F ; Stevens, T.H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c486t-1385444ff1c41262a20c380591f2ade19cb8ba8085470a9b3f1b34c9e5c3cc953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>AMINO ACID SEQUENCES</topic><topic>Amino acids</topic><topic>APARATO GOLGI</topic><topic>APPAREIL DE GOLGI</topic><topic>BETA-FRUCTOFURANOSIDASE</topic><topic>BINDING PROTEINS</topic><topic>Biological transport</topic><topic>Biological Transport - genetics</topic><topic>CARBOXYPEPTIDASES</topic><topic>Carrier Proteins - genetics</topic><topic>Carrier Proteins - metabolism</topic><topic>Cell growth</topic><topic>CELL MEMBRANES</topic><topic>Cells</topic><topic>Cellular biology</topic><topic>CHEMICAL COMPOSITION</topic><topic>COMPOSICION QUIMICA</topic><topic>COMPOSITION CHIMIQUE</topic><topic>Cytoplasmic Granules - genetics</topic><topic>Cytoplasmic Granules - metabolism</topic><topic>CYTOPLASMIC ORGANELLES</topic><topic>FRUCTOFURANOSIDASA</topic><topic>FRUCTOFURANOSIDASE</topic><topic>Fungal Proteins - genetics</topic><topic>Fungal Proteins - metabolism</topic><topic>GENBANK/AF00674</topic><topic>Gene Expression Regulation, Fungal</topic><topic>Genes</topic><topic>GOLGI APPARATUS</topic><topic>IMMUNOCYTOCHEMISTRY</topic><topic>IMMUNOLOGIE</topic><topic>IMMUNOLOGY</topic><topic>INMUNOLOGIA</topic><topic>MEMBRANAS CELULARES</topic><topic>MEMBRANE CELLULAIRE</topic><topic>Membrane Proteins - genetics</topic><topic>Membrane Proteins - metabolism</topic><topic>MEMBRANE VESICLES</topic><topic>Membranes</topic><topic>METABOLISME DES PROTEINES</topic><topic>METABOLISMO PROTEICO</topic><topic>MOLECULAR SEQUENCE DATA</topic><topic>MUTANT</topic><topic>MUTANTES</topic><topic>MUTANTS</topic><topic>ORGANITE CELLULAIRE</topic><topic>ORGANULOS CITOPLASMICOS</topic><topic>PEPTIDASAS</topic><topic>PEPTIDASE</topic><topic>PEPTIDASES</topic><topic>Plasmids</topic><topic>PROTEIN METABOLISM</topic><topic>PROTEIN TRANSPORT</topic><topic>PROTEINAS</topic><topic>PROTEINAS AGLUTINANTES</topic><topic>PROTEINE</topic><topic>PROTEINE DE LIAISON</topic><topic>PROTEINS</topic><topic>Qa-SNARE Proteins</topic><topic>Qb-SNARE Proteins</topic><topic>REGULATION</topic><topic>SACCHAROMYCES CEREVISIAE</topic><topic>Saccharomyces cerevisiae - genetics</topic><topic>Saccharomyces cerevisiae - metabolism</topic><topic>Saccharomyces cerevisiae - ultrastructure</topic><topic>Saccharomyces cerevisiae Proteins</topic><topic>SECRECION</topic><topic>SECRETION</topic><topic>Traffic</topic><topic>Transport vesicles</topic><topic>VACUOLA</topic><topic>VACUOLE</topic><topic>VACUOLES</topic><topic>Vesicular Transport Proteins</topic><topic>Yeast</topic><topic>Yeasts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Von Mollard, G.F. (University of Oregon, Eugene, OR.)</creatorcontrib><creatorcontrib>Nothwehr, S.F</creatorcontrib><creatorcontrib>Stevens, T.H</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Calcium &amp; Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>The Journal of cell biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Von Mollard, G.F. (University of Oregon, Eugene, OR.)</au><au>Nothwehr, S.F</au><au>Stevens, T.H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The yeast v-SNARE Vti1p mediates two vesicle transport pathways through interactions with the t-SNAREs Sed5p and Pep12p</atitle><jtitle>The Journal of cell biology</jtitle><addtitle>J Cell Biol</addtitle><date>1997-06-30</date><risdate>1997</risdate><volume>137</volume><issue>7</issue><spage>1511</spage><epage>1524</epage><pages>1511-1524</pages><issn>0021-9525</issn><eissn>1540-8140</eissn><coden>JCLBA3</coden><abstract>Membrane traffic in eukaryotic cells requires that specific v-SNAREs on transport vesicles interact with specific t-SNAREs on target membranes. We identified a novel Saccharomyces cerevisiae v-SNARE (Vti1p) encoded by the essential gene, VTI1. Vti1p interacts with the prevacuolar t-SNARE Pep12p to direct Golgi to prevacuolar traffic. vti1-1 mutant cells missorted and secreted the soluble vacuolar hydrolase carboxypeptidase Y (CPY) rapidly and reversibly when vti1-1 cells were shifted to the restrictive temperature. However, overexpression of Pep12p suppressed the CPY secretion defect exhibited by vti1-1 cells at 36 degrees C. Characterization of a second vti1 mutant, vti1-11, revealed that Vti1p also plays a role in membrane traffic at a cis-Golgi stage. vti1 -11 mutant cells displayed a growth defect and accumulated the ER and early Golgi forms of both CPY and the secreted protein invertase at the nonpermissive temperature. Overexpression of the yeast cis-Golgi t-SNARE Sed5p suppressed the accumulation of the ER form of CPY but did not lead to CPY transport to the vacuole in vti1-11 cells. Overexpression of Sed5p allowed growth in the absence of Vti1p. In vitro binding and coimmunoprecipitation studies revealed that Vti1p interacts directly with the two t-SNAREs, Sed5p and Pep12p. These data suggest that Vti1p plays a role in cis-Golgi membrane traffic, which is essential for yeast viability, and a nonessential role in the fusion of Golgi-derived vesicles with the prevacuolar compartment. Therefore, a single v-SNARE can interact functionally with two different t-SNAREs in directing membrane traffic in yeast</abstract><cop>United States</cop><pub>Rockefeller University Press</pub><pmid>9199167</pmid><doi>10.1083/jcb.137.7.1511</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects AMINO ACID SEQUENCES
Amino acids
APARATO GOLGI
APPAREIL DE GOLGI
BETA-FRUCTOFURANOSIDASE
BINDING PROTEINS
Biological transport
Biological Transport - genetics
CARBOXYPEPTIDASES
Carrier Proteins - genetics
Carrier Proteins - metabolism
Cell growth
CELL MEMBRANES
Cells
Cellular biology
CHEMICAL COMPOSITION
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
Cytoplasmic Granules - genetics
Cytoplasmic Granules - metabolism
CYTOPLASMIC ORGANELLES
FRUCTOFURANOSIDASA
FRUCTOFURANOSIDASE
Fungal Proteins - genetics
Fungal Proteins - metabolism
GENBANK/AF00674
Gene Expression Regulation, Fungal
Genes
GOLGI APPARATUS
IMMUNOCYTOCHEMISTRY
IMMUNOLOGIE
IMMUNOLOGY
INMUNOLOGIA
MEMBRANAS CELULARES
MEMBRANE CELLULAIRE
Membrane Proteins - genetics
Membrane Proteins - metabolism
MEMBRANE VESICLES
Membranes
METABOLISME DES PROTEINES
METABOLISMO PROTEICO
MOLECULAR SEQUENCE DATA
MUTANT
MUTANTES
MUTANTS
ORGANITE CELLULAIRE
ORGANULOS CITOPLASMICOS
PEPTIDASAS
PEPTIDASE
PEPTIDASES
Plasmids
PROTEIN METABOLISM
PROTEIN TRANSPORT
PROTEINAS
PROTEINAS AGLUTINANTES
PROTEINE
PROTEINE DE LIAISON
PROTEINS
Qa-SNARE Proteins
Qb-SNARE Proteins
REGULATION
SACCHAROMYCES CEREVISIAE
Saccharomyces cerevisiae - genetics
Saccharomyces cerevisiae - metabolism
Saccharomyces cerevisiae - ultrastructure
Saccharomyces cerevisiae Proteins
SECRECION
SECRETION
Traffic
Transport vesicles
VACUOLA
VACUOLE
VACUOLES
Vesicular Transport Proteins
Yeast
Yeasts
title The yeast v-SNARE Vti1p mediates two vesicle transport pathways through interactions with the t-SNAREs Sed5p and Pep12p
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