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1 v-SNAREs but not resident proteins were concentrated in
2 v-SNAREs were thought to ensure specificity in membrane
10 , we identified the yeast protein Vti1p as a v-SNARE that is involved in two transport reactions.
11 h Vti1a has previously been reported to be a v-SNARE localized in the trans-Golgi network, treatment
12 t example of a Ca(2+)-ATPase regulation by a v-SNARE protein involved in membrane fusion reactions.
13 In this work, we report that cellubrevin, a v-SNARE functioning in endosomal recycling and implicate
20 s significant sequence homology to Sec22p, a v-SNARE in Saccharomyces cerevisiae required for transpo
21 owever when t-SNARE vesicles were added to a v-SNARE membrane, SNAREs assembles in a ring pattern and
24 e that two mutations in the vesicle-anchored v-SNARE selectively impair the ability of Munc18-1 to pr
25 embled by recombinant t-SNARE Sso1p/Sec9 and v-SNARE Snc2p, which are involved in post-Golgi traffick
26 hat monitor lipid mixing between t-SNARE and v-SNARE vesicles in bulk solution exhibit remarkably slo
28 sition is highly conserved across the t- and v-SNARE families, and it was recently suggested that a 3
31 ng to simultaneously visualize receptors and v-SNAREs in real time in individual fusion events, we id
34 t biophysical studies have shown that t- and v-SNAREs can assemble in multiple stages from the N-term
35 vitro fusion assays using full-length t- and v-SNAREs embedded in liposomes, Gbetagamma inhibited Ca(
36 een target SNAREs and vesicle SNAREs (t- and v-SNAREs) are required for membrane fusion in intracellu
40 ing fluorescently labeled vesicle-associated v-SNARE (soluble N-ethylmaleimide-sensitive factor attac
43 is needed to package the membrane-associated v-SNAREs and Emp24p than is needed to package the solubl
44 equires zippering between vesicle-associated v-SNAREs and target membrane t-SNAREs, but the mechanism
45 Fusion is catalyzed when vesicle-associated v-SNAREs form trans-SNARE complexes ("SNAREpins") with t
49 ane-attached (t-SNARE) and vesicle-attached (v-SNARE) proteins that zipper together to form a coiled-
51 romiscuity characteristic of pairing between v-SNAREs and t-SNAREs extends to the formation of homo-o
52 karyotic cells relies on recognition between v-SNAREs on transport vesicles and t-SNAREs on target me
53 teractions require the participation of both v-SNAREs, indicating that, unlike post-Golgi membrane tr
55 re holds vesicles at an active zone to bring v-SNAREs and t-SNAREs, the proteins that mediate vesicle
57 OG complex-dependent (CCD) vesicles carrying v-SNAREs GS15 and GS28 and cis-Golgi glycoprotein GPP130
59 the interaction between Syn5 and the cognate v-SNARE Bet1 but increases its binding to p47, the adapt
60 to the membrane-proximal half of the cognate v-SNARE, and binds reversibly to the cognate region of t
63 isolated single flickering pores connecting v-SNARE-reconstituted nanodiscs to cells ectopically exp
66 in/VAMP-3 has been proposed to be a critical v-SNARE for human platelet exocytosis; however, data rep
67 Furthermore, we demonstrate that efficient v-SNARE/t-SNARE interactions require the participation o
74 for anchors of v- and t-SNAREs to function: v-SNAREs require anchors capable of spanning both leafle
75 ze the binding of GATE-16 to GOS-28, a Golgi v-SNARE, in a manner that requires ATP but not ATP hydro
76 ocytes, where it interacts with a post-Golgi v-SNARE protein, VAMP1, and acetylated microtubules.
80 n of Cpx with the SNARE bundle that hindered v-SNARE unraveling by Cpx, thus compromising clamping.
82 NAREs per NLP face, and further increases in v-SNARE copy numbers did not affect nucleation rate.
83 irement in our tethering assay and increased v-SNARE binding to exocyst gain-of-function complexes.
84 y of pore dilation increased with increasing v-SNARE copies and was far from saturating at 15 v-SNARE
86 oteoliposomes reconstituted with full-length v-SNAREs (synaptobrevin) into planar lipid bilayers cont
89 find that exocytosis mediated by the Longin v-SNARE TI-VAMP/VAMP7 is activated by tonic treatment wi
92 s lead us to propose that VAMP2 is the major v-SNARE involved in GLUT4 trafficking to the surface of
93 c Reticulum SNARE of 24 kD), a new mammalian v-SNARE implicated in vesicular transport between the ER
97 incorporation of purified vesicle membrane (-v) SNARE and target membrane (t-) SNARE proteins into se
101 small unilamellar vesicles bearing neuronal v-SNAREs fused with planar bilayers reconstituted with c
103 s (syntaxin-1, SNAP-25) or Munc18-1, but not v-SNAREs (synaptobrevins/VAMP1/2/3 using tetanus neuroto
105 TP binding protein), Vam3p (t-SNARE), Nyv1p (v-SNARE), and LMA1 (low Mr activity 1, a heterodimer of
107 ssociated with the t-SNARE in the absence of v-SNARE, but is not bound to the v-SNARE without t-SNARE
110 gene are more defective for the packaging of v-SNARE molecules and Emp24p than they are for the packa
111 These data imply a ranked redundancy of v-SNARE usage in platelets and suggest that VAMP-8-/- mi
116 e microsomes leads to increased packaging of v-SNAREs and Emp24p with no increase in the packaging of
117 or deleted and suggests that two species of v-SNAREs (VAMP and synaptotagmin) and two species of t-S
118 Es) and the delivery-vesicle SNARE VAMP2 (or v-SNARE) contain the "SNARE regions" that essentially me
120 gests that the mere presence of a particular v-SNARE may not be sufficient to determine the preferred
123 protein/vesicle-associated membrane protein (v-SNARE), and the SNARE complexes could be specifically
125 sicles that bear integral membrane proteins (v-SNAREs) which selectively interact with similar protei
126 We report the identification of a putative v-SNARE (GOS-28), localized primarily to transport vesic
128 that the endosomal Q/t-SNARE Tlg2 and the R/v-SNAREs Sec22 and Ykt6 interact with Sso1-Sec9, and are
129 ensitive fusion protein attachment receptor (v-SNARE) Vesicle associated membrane protein (VAMP), but
130 fusion protein attachment protein receptor (v-SNARE) and target membrane SNARE to each of the three
131 aleimide factor attachment protein receptor (v-SNARE) called cellubrevin/vesicle-associated membrane
132 ted soluble NSF attachment protein receptor (v-SNARE) on transport vesicles with a SNARE on the targe
133 ensitive factor attachment protein receptor (v-SNARE) Sncp and the plasma membrane t-SNAREs Ssop and
134 SNARE) and vesicle-associated SNAP receptor (v-SNARE) proteins is a critical step for the docking of
135 Among the membrane-bound v-SNAP receptor (v-SNARE) proteins, Bos1p is required only for forward tr
137 kt6p and perhaps Sft1p, acts as a retrograde v-SNARE capable of interacting with the cis-Golgi t-SNAR
138 riments showed that Mnn9p and the retrograde v-SNARE, Sec22p, were incorporated into COPI-coated vesi
141 results identify VAMP2 as a cargo-selective v-SNARE and suggest that surface delivery of specific GP
145 croscopy of labeled lipids to monitor single v-SNARE vesicle docking and fusion events on a planar li
146 e zippering of the vesicle-associated SNARE (v-SNARE) onto a binary SNARE complex on the target plasm
148 logical function of the VAMP3 vesicle SNARE (v-SNARE) isoform in the regulation of GLUT4 vesicle traf
150 obrevin/VAMP-8 is the primary vesicle-SNARE (v-SNARE) responsible for efficient release of dense and
152 SNARE complexes (formed when vesicle SNAREs [v-SNAREs] and target membrane SNAREs [t-SNAREs] combine
154 ne fusion through interactions with specific v-SNARE molecules on vesicle membranes, providing the in
155 c in eukaryotic cells requires that specific v-SNAREs on transport vesicles interact with specific t-
157 , we generated four variants of the synaptic v-SNARE synaptobrevin-2 (syb2) anchored to the membrane
162 sed this assay to investigate how targeting [v-SNARE, vesicle-soluble NSF (N-ethylmaleimide-sensitive
163 the interaction of vesicle proteins, termed v-SNAREs, with target membrane proteins, termed t-SNAREs
164 on MOR-containing endosomes, suggesting that v-SNAREs are copackaged with specific cargo into separat
169 cluding the t-SNAREs Vam3p and Vam7p and the v-SNARE Nyv1p, are found in a multisubunit "cis" complex
170 in which the interaction between Cpx and the v-SNARE serves as a spring to prevent premature zipperin
172 nic Drosophila with mutations in Cpx and the v-SNARE that disrupted a salt bridge between these two p
173 tion between the Cpx accessory helix and the v-SNARE would enhance Cpx flexibility and thus promote s
175 ns each functional aspect of priming, as the v-SNARE regulates the rate of Sec17p release and, in tur
176 d whereas many studies identify VAMP2 as the v-SNARE, others suggest that either VAMP3 or VAMP8 may a
181 lar lipid vesicles (SUVs) that contained the v-SNARE Synaptobrevin2 and Syt1-R398/399Q also docked to
182 to large unilamellar vesicles containing the v-SNARE synaptobrevin 2, which were docked and fused wit
183 of small unilamellar vesicles containing the v-SNARE VAMP2 and the Ca(2+) sensor synaptotagmin 1.
186 an be mediated by a peptide derived from the v-SNARE, which likely bypasses additional regulatory pro
189 lamine (DOPE) for phosphatidylcholine in the v-SNARE vesicle with either 0 or 20% DOPE included in th
190 e element of this recognition process is the v-SNARE, VAMP-2, because tetanus toxin, which cleaves VA
191 moeboid-like invasive tumour cell lines, the v-SNARE, VAMP3, regulates delivery of microvesicle cargo
192 n localized to the basolateral membrane, the v-SNARE operative in the AP-1B pathway remained unknown.
196 First, the N-terminal domain (NTD) of the v-SNARE docks to the t-SNARE, which leads to a conformat
198 and that no particular specialization of the v-SNARE is required to differentiate synaptic exocytosis
200 suggests that the cytoplasmic domain of the v-SNARE protein Sec22p is required for its packaging int
202 on in the membrane insertion sequence of the v-SNARE synaptobrevin/vesicle-associated membrane protei
203 terol induces a conformational change of the v-SNARE transmembrane domain (TMD) from an open scissors
205 can be rescued by the overexpression of the v-SNARE, Ykt6p, which physically interacts with Vti1p.
209 rmally present, vacuoles containing only the v-SNARE can fuse with those containing only the t-SNARE.
210 ing cholesterol in either the t-SNARE or the v-SNARE membrane favors a mechanism of direct fusion por
212 ntified a site on Sec24p that recognizes the v-SNARE Bet1p and show that packaging of a number of car
216 ken together, these results suggest that the v-SNARE Vti1a may regulate a step common to both GLUT4 a
221 similar set of genetic interactions with the v-SNARE genes, they exhibit a synthetic lethal interacti
222 demonstrated that Cpx's interaction with the v-SNARE promotes unraveling of the v-SNARE off the core
225 le large unilamellar vesicles doped with the v-SNARE synaptobrevin 2 by means of spinning-disc confoc
227 E complex to initiate NTD zippering with the v-SNARE, a mechanism likely shared by the mammalian unco
229 RE complex and prevents its pairing with the v-SNARE, therefore arresting the fusion reaction at a pr
231 nstrate that double mutants lacking both the v-SNAREs synaptotagmin and snb-1 are phenotypically simi
233 containing bound cytoplasmic domains of the v-SNAREs, Sec22p or Bos1p, or of the ER resident protein
234 the addition of exogenous Sar1p, whereas the v-SNAREs and Emp24p are not efficiently packaged under t
238 owing scorpion envenomation as both of these v-SNARE proteins are associated with zymogen granule mem
239 2, or rat cellubrevin failed to detect these v-SNAREs in human platelets, although membrane proteins
242 een suggested that Sec17p and Sec18p bind to v-SNARE/t-SNARE complexes and mediate the membrane fusio
243 atory effect was topologically restricted to v-SNARE vesicles (containing VAMP 2) and only occurred i
244 smic reticulum and Golgi complex employs two v-SNAREs, Bos1p and Sec22p, each containing a domain tha
245 Pore nucleation required a minimum of two v-SNAREs per NLP face, and further increases in v-SNARE
246 for vesicle-associated membrane protein type v-SNARE proteins (or synaptobrevins) reveals characteris
247 ed the dilation of single fusion pores using v-SNARE-reconstituted 23-nm-diameter discoidal nanolipop
250 erlapped with vesicles visualized by VAMP721 v-SNARE, but the majority of the foci represent sites wi
251 plasma membrane t-SNARE) and VAMP (a vesicle v-SNARE) to form a core protein complex thought to be an
254 AREs syntaxin 1A and SNAP-25 and the vesicle v-SNARE synaptobrevin, mediates the fusion of 2 membrane
257 uld we find any involvement for the vesicle (v)-SNARE VAMP4, which is known to be associated with syn
258 axin 17 (STX17) and SNAP29, and the vesicle (v)-SNARE VAMP8 (vesicle-associated membrane protein 8).
259 sts that pairs of proteins known as vesicle (v-) SNAREs and target membrane (t-) SNAREs interact spec
261 family of membrane proteins in the vesicle (v-SNAREs) and a heterodimeric complex of syntaxin and SN
264 ral membrane proteins on transport vesicles (v-SNAREs) and target organelles (t-SNAREs) that bind to
266 f SNARE complexes composed of the vesicular (v)-SNARE synaptobrevin and the target (t)-SNAREs Snap-25
269 s are comparable in the two assays (one with v-SNARE vesicles tethered to a surface and the other wit
273 at none of the coiled-coil residues of yeast v-SNARE is buried in the hydrophobic layer of the membra
274 I1b, two Arabidopsis homologues of the yeast v-SNARE Vti1p, which is required for multiple transport