ライフサイエンスコーパス: nuclear pore complex

1 rtin beta1 and Ran-GTPase, components of the nuclear pore complex.

2 and in achieving proper configuration of the nuclear pore complex.

3 and is stabilized by an interaction with the nuclear pore complex.

4 erlie mechanistic and kinetic control in the nuclear pore complex.

5 l channel, or on the cytoplasmic face of the nuclear pore complex.

6 ng protein cargoes for transport through the nuclear pore complex.

7 eptor TAP/NXF, which guides mRNA through the nuclear pore complex.

8 d the assembly of the coatomer module of the nuclear pore complex.

9 ction of cis-acting "DNA zip codes" with the nuclear pore complex.

10 processed mRNA and transports it through the nuclear pore complex.

11 x with SUMO-modified RanGAP1 and UBC9 at the nuclear pore complex.

12 forms the basket on the nuclear side of the nuclear pore complex.

13 plex with importin-beta to interact with the nuclear pore complex.

14 eptor Crm1 to facilitate passage through the nuclear pore complex.

15 latticework coats for COPII vesicles and the nuclear pore complex.

16 , but do not alter the level of Nup98 at the nuclear pore complex.

17 clear periphery through interaction with the nuclear pore complex.

18 beta1, which drives the receptor through the nuclear pore complex.

19 Nup35 gene, which encodes a component of the nuclear pore complex.

20 sically interacts with key components of the nuclear pore complex.

21 ery and requires Nup2, suggesting a role for nuclear pore complexes.

22 cient to ensure the even distribution of the nuclear pore complexes.

23 senger RNAs (mRNAs) to the cytoplasm through nuclear pore complexes.

24 mRNAs bound to the transport factor NXF1 to nuclear pore complexes.

25 - and CENP-F-mediated anchoring of dynein to nuclear pore complexes.

26 RNAs is thought to occur exclusively through nuclear pore complexes.

27 actor NXF1 resides in the nucleoplasm and at nuclear pore complexes.

28 followed by membrane-dependent insertion of nuclear pore complexes.

29 of the AAL signal localizes in proximity to nuclear pore complexes.

30 al properties of the permeability barrier of nuclear pore complexes.

31 Grima et al. (2017) describe defects in the nuclear pore complex and impaired nucleocytoplasmic tran

32 ependent on the Nup107-160 subcomplex of the nuclear pore complex and is modulated through interactio

33 t of nucleoporins (Nups) can detach from the nuclear pore complex and move into the nuclear interior

34 or trafficking of infectious DNA through the nuclear pore complex and plasmodesmata, respectively.

35 s, might help vaults safely pass through the nuclear pore complex and potentiate their role as self-r

36 mbrane-less organelles such as nucleoli, the nuclear pore complex and stress granules.

37 modeling as they are first acted upon by the nuclear pore complex and then by the ribosome.

38 vealing the octameric arrangement of Xenopus nuclear pore complexes and by quantifying the diffusion

39 UP-1 knockdown also disrupts organization of nuclear pore complexes and chromosomes.

40 istic step in Gle1's mRNA export function at nuclear pore complexes and directly implicate altered ex

41 d in the endosomal membrane pass through the nuclear pore complexes and function as non-membrane-boun

42 compaction that facilitates movement through nuclear pore complexes and the length of transcript poly

43 oint to an antagonistic relationship between nuclear pore complexes and the spindle pole body.

44 NUP107 is a component of the nuclear pore complex, and the NUP107-associated protein

45 stration between fluorescently labeled mRNA, nuclear pore complexes, and chromatin, we obtained globa

46 The opening lacks nuclear lamina, nuclear pore complexes, and nuclear membrane, but it is

47 tosol by employing anti-beta-tubulin or anti-nuclear pore complex antibody as cargo.

48 ition to suggesting functional links between nuclear pore complex architecture and cancer cell surviv

49 e nuclear periphery and interaction with the nuclear pore complex are prerequisites for gene clusteri

50 Nuclear pore complexes are composed of approximately 30

51 ges with the endoplasmic reticulum (ER), and nuclear pore complexes are disassembled.

52 In the insertion model, nuclear pore complexes are embedded in the nuclear envel

53 In fungi, nuclear pore complexes are free to move through the nucl

54 Nuclear pore complexes are fundamental components of all

55 Moreover, the nuclear pore complexes assemble only on the already form

56 lar or identical to those needed for de novo nuclear pore complex assembly.

57 Moreover, we provide evidence that a nuclear pore complex associates with the duplicating SPB

58 assemble on the chromatin as an intermediate nuclear pore complex before nuclear envelope formation.

59 f the three nucleoporins contains additional nuclear pore complex binding sites, distinct from those

60 nk between the Torsin/cofactor system and NE/nuclear pore complex biogenesis or homeostasis and estab

61 The coatomer module of the nuclear pore complex borders the cylinder-like nuclear p

62 east, some inducible genes interact with the nuclear pore complex both when active and for several ge

63 umulate in a storage of improperly assembled nuclear pore complexes compartment, or SINC.

64 Nuclear pore complex components (Nups) have been implica

65 The Hog1 SAPK associates with nuclear pore complex components and directly phosphoryla

66 cytosolic localization of TDP-43, including nuclear pore complex components and regulators of G2/M c

67 Nuclear pore complexes consist of several subcomplexes.

68 Nuclear pore complexes control the exchange of macromole

69 The nuclear pore complex controls the passage of molecules v

70 ous intracellular compartments including the nuclear pore complex, COPII-coated vesicles, and inside

71 The NIMA kinase is required for mitotic nuclear pore complex disassembly and potentially control

72 We propose a model whereby nuclear pore complexes either compete with the spindle p

73 The nuclear pore complex encloses a central channel for nucl

74 rdered Phe-Gly nucleoporins (FG Nups) within nuclear pore complexes exert multivalent interactions wi

75 Tpr, a component of the NPCs (nuclear pore complexes), facilitates the formation of th

76 associates with mRNA and delivers it to the nuclear pore complex for export to the cytoplasm.

77 While NUP107 is required for nuclear pore complex function in somatic cells of flies

78 leo-cytoplasmic flux, which was dependent on nuclear pore complex function.

79 n which transport and mechanistic aspects of nuclear pore complex functionality are reconciled.

80 The nuclear pore complex gates nucleocytoplasmic transport t

81 rins comprising the modular structure of the nuclear pore complex have been defined at atomic resolut

82 Although components of the nuclear pore complex have been implicated in gene regula

83 ddition to its well-defined interaction with nuclear pore complexes, here we find that Gle1 is enrich

84 omolecular complexes with an emphasis on the nuclear pore complex, holding great potential for applic

85 fission yeast, and surveillance of defective nuclear pore complexes in budding yeast.

86 that facilitate selective transport through nuclear pore complexes in eukaryotic cells.

87 entional fluorophores, we have imaged single nuclear pore complexes in the nuclear membrane and aggre

88 Recording nanobody-labeled nuclear pore complexes in Xenopus laevis cells showed th

89 , which is shared by several proteins of the nuclear pore complex, including those in the central cha

90 During mitosis, the nuclear pore complex is disassembled and, increasingly,

91 Here, we genetically show that an intact nuclear pore complex is important for cell survival and

92 lear pore complex; its exact function in the nuclear pore complex is still unknown.

93 The nuclear pore complex is the primary conduit for nuclear

94 The nuclear pore complex is the sole mediator of bidirection

95 biting nuclear transport also shows that the nuclear pore complex is vulnerable to unusual cargo rece

96 is a nuclear membrane protein comprising the nuclear pore complex; its exact function in the nuclear

97 ed if ICP27 could interact directly with the nuclear pore complex itself, finding that ICP27 directly

98 lo-like kinase 1 (PLK-1) is recruited to the nuclear pore complexes, just prior to NEBD, through its

99 are stacked ER-derived membranes containing nuclear pore complex-like structures whose fate and func

100 The massive nuclear pore complex mediates nucleocytoplasmic traffic

101 The nuclear pore complex mediates nucleocytoplasmic transpor

102 exerts its function and whether it modulates nuclear pore complex (NPC) activity remain unknown.

103 Multiple components of the nuclear pore complex (NPC) and a second coiled-coil prot

104 uncover two metformin response elements: the nuclear pore complex (NPC) and acyl-CoA dehydrogenase fa

105 ding yeast, targeting of active genes to the nuclear pore complex (NPC) and interchromosomal clusteri

106 We detected two exceptions: the nuclear pore complex (NPC) and the spindle pole body (SP

107 The molecular structure of the yeast nuclear pore complex (NPC) and the translocation of mode

108 generated nanobodies against the vertebrate nuclear pore complex (NPC) and used them in STORM imagin

109 e associated with shedding of NUP62 from the nuclear pore complex (NPC) and/or retention of NUP62 in

110 The cytoplasmic filament nucleoporins of the nuclear pore complex (NPC) are critically involved in nu

111 The nuclear pore complex (NPC) arose in evolution as the cel

112 Elys is a conserved protein that directs nuclear pore complex (NPC) assembly in mammalian cell li

113 However, how nuclear pore complex (NPC) barrier selectivity, Kap traf

114 d important for the overall integrity of the nuclear pore complex (NPC) but not known to have cargo-s

115 show that PfSR1 is localized adjacent to the Nuclear Pore Complex (NPC) clusters in the nucleus of ea

116 directly in vitro with the FG repeats of the nuclear pore complex (NPC) components Nup62, Nup98, and

117 Here, we show that nuclear pore complex (NPC) components Nup93 and Nup153 b

118 The nuclear pore complex (NPC) constitutes the sole gateway

119 The key component of the nuclear pore complex (NPC) controlling permeability, sel

120 The nuclear pore complex (NPC) controls the transport of mac

121 mechanism to explain how a component of the nuclear pore complex (NPC) could cause Htx/CHD was undef

122 1 and MAD2) were found to associate with the nuclear pore complex (NPC) during interphase and to requ

123 esized membrane proteins traffic through the nuclear pore complex (NPC) en route to the inner nuclear

124 Here we tested if the nuclear pore complex (NPC) facilitates the targeting of

125 /RanGAP1*SUMO1/Ubc9 localizes at cytoplasmic nuclear pore complex (NPC) filaments and is a docking si

126 nterest and represents a central paradigm to nuclear pore complex (NPC) function, where nuclear trans

127 nucleocytoplasmic information transfer, the nuclear pore complex (NPC) has been studied in great det

128 The nuclear pore complex (NPC) has dual roles in nucleocytop

129 l T cell signaling, direct regulation of the nuclear pore complex (NPC) has not been reported.

130 lluring proposal outlining functions for the nuclear pore complex (NPC) in transcription and nuclear

131 The measured active-export time through the Nuclear Pore Complex (NPC) is 18 ms, remarkably similar

132 The nuclear pore complex (NPC) is a multiprotein assembly th

133 At the center of the nuclear pore complex (NPC) is a uniquely versatile centr

134 The central pore of a nuclear pore complex (NPC) is filled with unstructured p

135 The basket of the nuclear pore complex (NPC) is generally depicted as a di

136 nups) that line the transport channel of the nuclear pore complex (NPC) is investigated by means of c

137 NA (mRNA) through the aqueous channel of the nuclear pore complex (NPC) is mediated by interactions b

138 Binding of the capsid to the nuclear pore complex (NPC) is mediated by the capsid pro

139 The nuclear pore complex (NPC) is responsible for nucleocyto

140 The nuclear pore complex (NPC) is the gate for transport bet

141 The nuclear pore complex (NPC) is the gatekeeper of the nucl

142 The nuclear pore complex (NPC) is the principal gateway for

143 The nuclear pore complex (NPC) is the proteinaceous nanopore

144 The prevailing model poses that the nuclear pore complex (NPC) is the sole gatekeeper for tr

145 The nuclear pore complex (NPC) is the sole gateway between t

146 The nuclear pore complex (NPC) mediates nucleocytoplasmic tr

147 The nuclear pore complex (NPC) mediates the transport of mac

148 Interference with the nuclear pore complex (NPC) or the actin cytoskeleton in

149 The nuclear pore complex (NPC) plays a critical role in gene

150 I have focused on understanding the role the nuclear pore complex (NPC) plays in maintaining this bal

151 Tpr is a conserved nuclear pore complex (NPC) protein implicated in the spi

152 iated Esc1, the SUMO E3 ligase Siz2, and the nuclear pore complex (NPC) protein Nup170-physically and

153 enterovirus 2A protease directly cleaves the nuclear pore complex (NPC) protein, Nup98, at amino acid

154 ring Aspergillus nidulans mitosis peripheral nuclear pore complex (NPC) proteins (Nups) disperse from

155 Enteroviruses proteolyze nuclear pore complex (NPC) proteins (Nups) during infect

156 The nuclear pore complex (NPC) regulates transport between t

157 his process is regulated at the level of the nuclear pore complex (NPC) remains unclear.

158 in receptor (p75(NTR)) is a component of the nuclear pore complex (NPC) required for glial scar forma

159 Selective transport through the nuclear pore complex (NPC) requires nucleoporins contain

160 Lectin blockade of the nuclear pore complex (NPC) resulted in inhibition of nuc

161 The nuclear pore complex (NPC) selectively gates the transpo

162 The nuclear pore complex (NPC) serves as both the unique gat

163 es for some ER proteins in the NE for proper nuclear pore complex (NPC) structure and function.

164 The nuclear pore complex (NPC) tethers chromatin to create a

165 nsport, however, is tightly regulated by the nuclear pore complex (NPC) with the hydrophobic transpor

166 novirus (AdV) to the cytoplasmic face of the nuclear pore complex (NPC), a key step during delivery o

167 NPs), the translocation of mRNPs through the nuclear pore complex (NPC), and the mRNP remodeling even

168 etic modifiers that encode components of the nuclear pore complex (NPC), as well as the machinery tha

169 The nuclear pore complex (NPC), assembled from approximately

170 ls involves regulatory interactions with the nuclear pore complex (NPC), followed by translocation to

171 2, a component of the central channel of the nuclear pore complex (NPC), for forced dimerization by t

172 omponent of the cytoplasmic filaments of the nuclear pore complex (NPC), is essential for mouse embry

173 g, transport, and cytoplasmic release from a nuclear pore complex (NPC), is fast ( approximately 200

174 this study we used BioID to study the human nuclear pore complex (NPC), one of the largest macromole

175 The nuclear pore complex (NPC), the sole gateway for nucleoc

176 ic reticulum to the Golgi apparatus, and the nuclear pore complex (NPC), which facilitates nucleo-cyt

177 In C. elegans, nuclear pore complex (NPC)-like FG repeat domains are fo

178 s) are exported to the cytoplasm through the nuclear pore complex (NPC).

179 o transport cargos directionally through the nuclear pore complex (NPC).

180 nslocation of transport complexes across the nuclear pore complex (NPC).

181 for unstructured proteins (polymers) in the nuclear pore complex (NPC).

182 xport and is thought to remodel mRNPs at the nuclear pore complex (NPC).

183 of a non-dividing cell, is exclusive to the nuclear pore complex (NPC).

184 Nucleoporins are essential components of the nuclear pore complex (NPC).

185 mammalian nucleoporin 98, a component of the nuclear pore complex (NPC).

186 rved assembly at the cytoplasmic face of the nuclear pore complex (NPC).

187 repeats that fill the central channel of the nuclear pore complex (NPC).

188 hat localizes to the cytoplasmic side of the nuclear pore complex (NPC).

189 The particles were observed to often probe nuclear pore complexes (NPC) at their nuclear face, and

190 ontaining nucleoporin proteins (Nups) within nuclear pore complexes (NPC).

191 Nuclear pore complexes (NPCs) allow selective import and

192 There is now strong evidence that nuclear pore complexes (NPCs) and nuclear membranes coev

193 lasmic reticulum (ER), translocation through nuclear pore complexes (NPCs) and retention on nuclear p

194 ic systems such as Saccharomyces cerevisiae, nuclear pore complexes (NPCs) and the spindle pole body

195 brane proteins, and large structures such as nuclear pore complexes (NPCs) and the spindle pole body.

196 eraction of non-chromosomal DNA circles with nuclear pore complexes (NPCs) and thereby promotes their

197 hp1:Sem1:Sus1:Cdc31 (TREX2) complex binds to nuclear pore complexes (NPCs) and, in addition to integr

198 Nuclear pore complexes (NPCs) are 110-megadalton assembl

199 Nuclear pore complexes (NPCs) are approximately 100 MDa

200 Nuclear pore complexes (NPCs) are built from approximate

201 Nuclear pore complexes (NPCs) are composed of several co

202 Nuclear pore complexes (NPCs) are essential protein asse

203 Nuclear pore complexes (NPCs) are gateways for nucleocyt

204 Nuclear pore complexes (NPCs) are huge assemblies formed

205 Nuclear Pore Complexes (NPCs) are key cellular transport

206 Nuclear pore complexes (NPCs) are large macromolecular a

207 Nuclear pore complexes (NPCs) are large macromolecular s

208 long-term protein persistence, we found that nuclear pore complexes (NPCs) are maintained over a cell

209 Nuclear pore complexes (NPCs) are multiprotein channels

210 Nuclear pore complexes (NPCs) are the sole gateways that

211 Nuclear pore complexes (NPCs) assemble at the end of mit

212 In metazoa, nuclear pore complexes (NPCs) assemble from disassembled

213 e nucleus, possibly due to delocalization of nuclear pore complexes (NPCs) at the nuclear envelope.

214 Nuclear pore complexes (NPCs) conduct massive transport

215 The transport channel of nuclear pore complexes (NPCs) contains a high density of

216 The permeability barrier of nuclear pore complexes (NPCs) controls bulk nucleocytopl

217 Nuclear pore complexes (NPCs) correspond to large protei

218 Transport through nuclear pore complexes (NPCs) during interphase is facil

219 of mitosis and modulates distribution of the nuclear pore complexes (NPCs) during mitotic NE expansio

220 Nucleocytoplasmic transport is mediated by nuclear pore complexes (NPCs) embedded in the nuclear en

221 Nuclear pore complexes (NPCs) emerged as nuclear transpo

222 Nuclear pore complexes (NPCs) form a selective filter th

223 Nuclear pore complexes (NPCs) form gateways for material

224 transport of single molecules through single nuclear pore complexes (NPCs) in intact cells.

225 Here we show that nuclear pore complexes (NPCs) in interphase cells also f

226 es can lead to an uneven distribution of the nuclear pore complexes (NPCs) in the interphase nuclear

227 Here, we have shown that during mitosis nuclear pore complexes (NPCs) in the mother nucleus are

228 Nuclear pore complexes (NPCs) influence gene expression

229 s sentrin-specific proteases, or SENPs) with nuclear pore complexes (NPCs) is conserved in eukaryotic

230 artmentalization by the nuclear envelope and nuclear pore complexes (NPCs) is essential for cell func

231 epletions suggest that translocation through nuclear pore complexes (NPCs) is rate-limiting and restr

232 Passive macromolecular diffusion through nuclear pore complexes (NPCs) is thought to decrease dra

233 cleus and cytoplasm, is tightly regulated by nuclear pore complexes (NPCs) made up of nucleoporins (N

234 Nuclear pore complexes (NPCs) mediate cargo traffic betw

235 Nuclear pore complexes (NPCs) mediate the exchange of ma

236 er RNA:protein complexes (mRNPs) through the nuclear pore complexes (NPCs) of eukaryotic cells.

237 , P granules are associated with clusters of nuclear pore complexes (NPCs) on germ cell nuclei.

238 Nuclear pore complexes (NPCs) perforate the nuclear enve

239 Nuclear pore complexes (NPCs) provide a gateway for the

240 ntial macromolecular protein assemblies: the nuclear pore complexes (NPCs) that enable nucleocytoplas

241 of select nucleoporin proteins (Nups) within nuclear pore complexes (NPCs) to disrupt karyopherin-dep

242 Chromatin and nuclear pore complexes (NPCs) undergo dramatic changes d

243 heir preintegration complexes (PICs) through nuclear pore complexes (NPCs) within nuclear envelopes.

244 to p53-SUMO-1 and their accumulation in the nuclear pore complexes (NPCs), as well as their persiste

245 GANP is required to recruit ENY2 to nuclear pore complexes (NPCs), but ENY2 is not necessary

246 e requires a dedicated transport system: (1) nuclear pore complexes (NPCs), embedded in the nuclear e

247 Nucleocytoplasmic transport is mediated by nuclear pore complexes (NPCs), enormous assemblies compo

248 horylation-driven partial disassembly of the nuclear pore complexes (NPCs), increasing their permeabi

249 ucleocytoplasmic transport are maintained by nuclear pore complexes (NPCs), large structures composed

250 known as the constituent building blocks of nuclear pore complexes (NPCs), membrane-embedded channel

251 ucleocytoplasmic transport is facilitated by nuclear pore complexes (NPCs), which are massive protein

252 Correct assembly of nuclear pore complexes (NPCs), which directly and indire

253 ar envelope, so Mad1 does not anchor them to nuclear pore complexes (NPCs).

254 when tRNA synthesis peaks, tDNAs localize at nuclear pore complexes (NPCs).

255 e nucleus and the cytoplasm is controlled by nuclear pore complexes (NPCs).

256 selective and efficient biomachines known as nuclear pore complexes (NPCs).

257 eps to mediate directional transport through nuclear pore complexes (NPCs).

258 on of mRNA/protein complexes (mRNPs) through nuclear pore complexes (NPCs).

259 nuclei showed a round shape and presence of nuclear pore complexes (NPCs).

260 les and contribute to the quality control of nuclear pore complexes (NPCs); whether these processes a

261 air; neuron pruning; extraction of defective nuclear pore complexes; nuclear envelope reformation; pl

262 sample preservation with a structure of the nuclear pore complex obtained from a single tomogram.

263 P214) are differentially distributed between nuclear pore complexes on the flattened surfaces and per

264 Because NIMA triggers nuclear pore complex opening during mitosis, our finding

265 uding capsid transport, decapsidation at the nuclear pore complex, particle assembly, and secondary e

266 n Nup35, which is consistent with use of the nuclear pore complex peripheral channels.

267 rins implicated in maintaining the selective nuclear pore complex permeability barrier.

268 ter Blobel, on the structure and function of nuclear pore complexes; Peter Walter, on the unfolded pr

269 Although the nuclear pore complex plays a fundamental, conserved role

270 Our finding suggested that the nuclear pore complex plays an important role in mammalia

271 Here we review transport through the nuclear pore complex, pointing out vulnerabilities that

272 The nuclear pore complex protein NUP88 is frequently elevate

273 that the Arabidopsis (Arabidopsis thaliana) nuclear pore complex protein Nup88/MOS7 is essential for

274 s the interaction of N-terminal htt with the nuclear pore complex protein Tpr.

275 Kee et al. now propose that nuclear pore complex proteins form a fundamental part of

276 the Sad1p, UNC-84 domain protein Klaroid and nuclear pore complex proteins were mislocalized to the c

277 ral aspects of ICP27 trafficking through the nuclear pore complex remain unclear.

278 ults suggest that LNO1 is a component of the nuclear pore complex required for mature mRNA export fro

279 Analysis of a large dynamic structure-the nuclear pore complex-revealed variations detectable at t

280 itulate "dilation" and "constriction" of the nuclear pore complex's central transport channel.

281 Rodriguez-Bravo et al. report that the nuclear pore complex scaffolds spindle assembly checkpoi

282 Beyond their role at nuclear pore complexes, some nucleoporins function in th

283 provided a high-resolution understanding of nuclear pore complex structure and transport, revealing

284 ELLPs were associated with chromatin and the nuclear pore complex, the central transport channels tha

285 ssical nuclear import pathway, involving the nuclear pore complex, the small GTPase Ran, and cellular

286 Within the nuclear pore complex, this underlies how transport recep

287 human cells, this dynein pool is anchored to nuclear pore complexes through RanBP2-Bicaudal D2 (BICD2

288 Nuclear pore complexes tightly regulate nucleo-cytoplasm

289 rate complicated molecular gates such as the nuclear pore complex to control the transport of biologi

290 mprehensive architectural model of the human nuclear pore complex to date.

291 functions with cis-encoded DNA elements and nuclear pore complexes to regulate interchromosomal gene

292 ion of identical daughter nuclei by coupling nuclear pore complexes to the segregating chromosomes.

293 onsiderations when studying the mechanism of nuclear pore complex transport in vivo.

294 G-Nups for its entire trajectory through the nuclear pore complex until RanGTP severs the cargo-Nup b

295 onal hsp-16.2/41 promoter interacts with the nuclear pore complex upon activation by heat shock in th

296 entary studies that Plk1 is recruited to the nuclear pore complex upon mitotic entry, where it acts w

297 the cellular substrates, particularly in the nuclear pore complex, used by these proteases were indee

298 To study transport through the nuclear pore complex, we developed a computational simul

299 oscopy (AFM) to the nuclear envelope and the nuclear pore complexes, we demonstrate that disposition

300 ants, and 3) transcripts being enriched near nuclear pore complexes when components of the mRNA expor