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1 IRES activity was dependent on upstream MAPK (mitogen-ac
2 IRES are characterized by periods of flow cessation, dur
3 IRES usually function when 5' cap-dependent translation
5 nesis of the miR-134 binding site in Sabin-1 IRES relieved miR-134-mediated repression indicating tha
7 diverges structurally from canonical Type 1 IRESs (e.g. poliovirus) but nevertheless also contains a
9 o corresponding elements in canonical Type 1 IRESs, and non-canonical flanking domains (d8, d9 and d1
13 CrPV IGR IRES activity either decreased 40S-IRES complex formation, or increased the rate of the con
17 ons are labeled by expression of the or111-7:IRES:GAL4 transgene whose axons terminate in the central
19 ovirus 2A protease generates a high-affinity IRES binding truncation of eIF4G that stimulates eIF4A d
21 t provides a publicly available tool for all IRES researchers, and can be used in other genomics appl
24 s nuclear ribonucleoprotein, hnRNP A1, is an IRES transacting factor (ITAF) that regulates the IRES-d
25 ry, our findings suggest the existence of an IRES in the 5' coding sequence of TDP2 that translationa
31 nctional link between tRNA modification- and IRES-dependent translation during tumor cell invasion an
32 inaccessibility of the pyrimidine tract and IRES activity, as determined in both in vitro and in viv
33 screen identified hnRNP A1 (A1) and RPS25 as IRES-binding trans-acting factors required for ER stress
34 1, which can program increased initiation at IRES motifs on mRNA by the translational initiation comp
36 the deletion of IIId2 from the CSFV and BDV IRES elements impairs initiation of translation by inhib
38 omains, facilitating head swivel and biasing IRES translocation via hitherto-elusive intermediates wi
39 nd 3) the retarding effect of ribosome-bound IRES on protein synthesis is largely overcome following
42 e canonical Type 1 and divergent cadicivirus IRESs require the same IRES trans-acting factor, poly(C)
45 cular mechanism by which La stimulates CCND1 IRES-mediated translation, and we propose that its RNA c
47 suggesting that this viral IRES and cellular IRES may have similar strategies for internal translatio
51 reERLacZ (Prom1C-L) mice, in which a CreERT2-IRES-nuclear LacZ cassette is knocked into the first ATG
52 sults distinguished two pathways of 80S:CrPV IRES complex assembly that produce elongation-competent
53 itiation factor nor initiator tRNA, the CrPV IRES jumpstarts translation in the elongation phase from
57 Once the 60S is recruited, the binary CrPV-IRES/80S complex oscillates between canonical and rotate
58 is Virus Internal Ribosomal Entry Site (CrPV-IRES) binds the small ribosomal subunit (40S) and the tr
60 interact with pseudoknot I (PKI) of the CrPV-IRES stabilizing it in a conformation reminiscent of a h
61 rgenic IRES of Cricket Paralysis Virus (CrPV-IRES) forms a tight complex with 80S ribosomes capable o
65 on of 2A protease and consequent robust CVB3 IRES-mediated translation by the C-terminal eIF4GI fragm
66 AP5 and C-terminal eIF4GI interact with CVB3 IRES in the same region, but DAP5 exhibits a lower affin
68 e demonstrate that C11 also blocks cyclin D1 IRES-dependent initiation and demonstrates synergistic a
71 ubset of mutations that are known to disrupt IRES activity failed to produce virus, demonstrating the
74 nly Cre alleles (Villin-Cre(ERT2), Lgr5-EGFP-IRES-Cre(ERT2), Hnf4alpha(+/+), and Hnf4gamma(+/+)) or m
75 rmed studies with Villin-Cre(ERT2);Lgr5-EGFP-IRES-Cre(ERT2);Hnf4alpha(f/f);Hnf4gamma(Crispr/Crispr) m
76 ble knockout (Cbl/Cbl-b DKO) using Lgr5-EGFP-IRES-CreERT2, to demonstrate a mammary epithelial cell-a
77 r 5-positive (Lgr5(+)) stem cells (Lgr5-eGFP-IRES-CreERT2/Rosa26-TdTomato mice) and in situ hybridiza
78 he other hand, the CDV IRES forms a 40S/eIF3/IRES ternary complex, with multiple points of contact.
79 s work provides key details into how an EV71 IRES structure adapts to hijack a cellular protein, and
81 us (SVV), a picornavirus, is dispensable for IRES activity, while the IIId2 sub-domains of two pestiv
84 devoid of extensive secondary structure has IRES activity and produces low levels of viral coat prot
85 Here we demonstrate that eIF4E regulates HAV IRES-mediated translation by two distinct mechanisms.
88 demonstrated that after binding, the 40S:HCV IRES complex is conformationally dynamic, undergoing slo
90 Our data support a single-step model of HCV IRES recruitment to 40S subunits, irreversible on the in
91 sis of eIF3 subunits associated with the HCV IRES disclosed similar effects and that the a subunit is
98 ion in the 3' NTR and domain IIId of the HCV-IRES in the 5' NTR, and promoted HCV replication and tra
99 that DAP5 is specifically required by type I IRES but not by type II or type III IRES, in which cleav
101 a model for enteroviral 5' UTRs with type I IRES elements that links structure to function during th
104 ution revealed that as with canonical Type I IRESs, 48S complex formation requires eukaryotic initiat
105 However, in contrast to canonical Type I IRESs, subsequent recruitment of 43S ribosomal complexes
106 oach reveals that the PKI domain of the IAPV IRES adopts an RNA structure that resembles a complete t
107 rovirus Israeli acute paralysis virus (IAPV) IRES PKI domain can uncouple 0 and +1 frame translation,
108 ese, we reconstructed the trajectory of IAPV-IRES from the early small subunit recruitment to the fin
109 n and a post-translocation state of the IAPV-IRES in the ribosome, allowing us to identify six struct
110 ed toward fighting CCD by targeting the IAPV-IRES using RNA-interference technology are underway, and
111 ned the role of previously characterized IGR IRES mutations on viral yield and translation in CrPV-in
112 Mutations in eS25 that reduced CrPV IGR IRES activity either decreased 40S-IRES complex formatio
113 facilitates initial binding of the CrPV IGR IRES to the 40S while ensuring that the conformational c
115 g the key IRES-ribosome interactions for IGR IRES translation in infected cells, which highlights the
116 s have provided mechanistic details into IGR IRES translation, these studies have been limited to in
121 y type I IRES but not by type II or type III IRES, in which cleavage of eIF4GI has not been observed.
123 ation of IRES-J007, which displayed improved IRES-dependent initiation blockade and synergistic anti-
124 rkedly reduces an equol-mediated increase in IRES-dependent mRNA translation and the expression of sp
125 ne-tract within a stable hairpin inactivates IRES activity, since the stronger the stability of the h
130 to virus production, thus revealing the key IRES-ribosome interactions for IGR IRES translation in i
138 demonstrate that adjacent mutations modulate IRES activity, independently of protein-coding sequence
140 findings may be applicable to cellular mRNA IRES that also have little or no sequences/structures in
141 , we show that ribosomes assembled on mutant IRESs that direct exclusive 0 or +1 frame translation la
142 ikingly, PCBP2 enhanced initiation on mutant IRESs that retained consensus GNRA tetraloops, whereas m
144 locking the interaction of a requisite c-MYC IRES trans-acting factor, heterogeneous nuclear ribonucl
145 a small molecule capable of inhibiting c-MYC IRES translation as a consequence of blocking the intera
148 ain how c-myc was maintained, we studied myc IRES (internal ribosome entry site) function, which does
149 ound that prevented binding of A1 to the myc IRES and specifically inhibited myc IRES activity in MM
150 Cre(tg/wt) mice were crossed to Rosa26(N1ICD-IRES-GFP) to enhance Notch signaling in HEC (NICD(OE-HEC
151 es the question of what effect the necessary IRES dissociation from the tRNA binding sites, and ultim
152 del with mice that overexpress the ErbB2/Neu-IRES-Cre transgene (NIC) specifically in the mammary epi
154 ive components, we characterized how a novel IRES at the 5'-UTR of a viral RNA assembles a functional
159 ey are well-studied in bulk, the dynamics of IRES-mediated translation remain unexplored at the singl
160 igated and resulted in the identification of IRES-J007, which displayed improved IRES-dependent initi
161 re knockin mice with a targeted insertion of IRES-Cre at the Ins2 locus and demonstrated with a cell
165 cal cycles, especially because prevalence of IRES will increase due to increasing severity of drying
169 x and Hsp90 to upregulate the translation of IRES-containing transcripts such as HIF1a, Myc and VEGF,
171 ounts for 15 gene-targeted strains of the OR-IRES-marker design coexpressing a fluorescent protein.
175 in DYN+ neurons was confirmed in CeA of Pdyn-IRES-Cre mice and functionality of an inhibitory (hM4Di)
178 Therefore, our data reveal how picornavirus IRESs use eIF4E-dependent and -independent mechanisms to
181 This provides a mechanism to explain why PV IRES-mediated translation is stimulated by eIF4E availab
183 Initiation on Type 1 IRESs also requires IRES trans-acting factors (ITAFs), and several candidate
184 F2 with a GTP analog stabilizes the ribosome-IRES complex in a rotated state with an extra ~3 degrees
185 divergent cadicivirus IRESs require the same IRES trans-acting factor, poly(C)-binding protein 2 (PCB
187 ergenic region internal ribosome entry site (IRES) adopts a triple-pseudoknotted RNA structure and oc
189 uses encode an internal ribosome entry site (IRES) at the 5' end of their RNA, which, unlike most cel
190 discovered an internal ribosome entry site (IRES) at the 5' untranslated region of the p53 mRNA.
191 s virus (EMCV) internal ribosome entry site (IRES) between NS2 and NS3 to separate the two proteins i
193 he function of Internal Ribosome Entry Site (IRES) elements is intimately linked to their RNA structu
197 H2 bound to an internal ribosome entry site (IRES) in the 5'UTR of p53 mRNA and enhanced p53 protein
198 aralysis virus internal ribosome entry site (IRES) RNA, which shows that it is nonfunctional because
199 ugh structured internal ribosome entry site (IRES) RNAs can manipulate ribosomes to initiate translat
200 e tests on the internal ribosome entry site (IRES) segments yield satisfiable results with experiment
202 s use a type I Internal Ribosome Entry Site (IRES) structure to facilitate protein synthesis and prom
203 l level via an internal ribosome entry site (IRES) that initiates translation at codon 54, the second
205 We define an internal ribosome entry site (IRES) within ELANE and demonstrate that adjacent mutatio
207 C virus (HCV) internal ribosome entry site (IRES), we measured the rates of 40S subunit arrival to t
208 vation of this internal ribosome entry site (IRES)-dependent mRNA translation initiation pathway resu
215 iral genomes, internal ribosome entry sites (IRES) can be used to bypass the traditional requirement
216 Viruses use internal ribosome entry sites (IRES) to hijack host ribosomes and promote cap-independe
217 nces, called Internal Ribosomal Entry Sites (IRES), in viral RNAs is a widespread strategy for the ex
220 e presence of internal ribosome entry sites (IRESs) in the viral RNAs, using different sets of host t
223 anism for how internal ribosome entry sites (IRESs) recruit ribosomes to initiate translation of an m
224 Viruses use internal ribosome entry sites (IRESs) to minimize or, like the CrPV IRES, eliminate the
227 Similar to internal ribosome entry sites (IRESs), specialized translation initiation requires the
228 nces, called internal ribosomal entry sites (IRESs), to precisely exploit the host machinery for vira
233 in slice preparation of transgenic adult Sst-IRES-Cre mice expressing tdTomato fluorescence, channelr
234 e shown that the human La protein stimulates IRES-mediated translation of the cooperative oncogene CC
235 f intermittent rivers and ephemeral streams (IRES), which comprise half of the global river network a
240 These studies show that PCBP2 enables the IRES to exploit the GNRA tetraloop to enhance initiation
241 During this unusual translocation event, the IRES undergoes a pronounced conformational change to a m
244 opy (cryo-EM), we have characterized how the IRES of Israeli acute paralysis virus (IAPV) intergenic
246 ing a previously unseen binding state of the IRES and directly rationalizing that an eEF2-dependent t
247 ed a truncated reading frame upstream of the IRES by exon skipping, which led to synthesis of a funct
249 ukaryotic ribosome, we took advantage of the IRES from the intergenic region (IGR) of the Cricket Par
250 that an eEF2-dependent translocation of the IRES is required to allow the first A-site occupation.
252 d eukaryotes depends on the structure of the IRES RNA, but in bacteria this RNA uses a different mech
254 o-steps: an initial fast binding step of the IRES to the 40S ribosomal subunit, followed by a slow un
255 34 to Sabin-1 IRES caused degradation of the IRES transcript in a miR-134 and sequence specific manne
261 ubgenomic RNAs, strongly suggesting that the IRES was active in the gRNA invivo Since the TCV CP also
263 well as hAgo2:miR-122 interactions with the IRES-40S complex that suggest hAgo2 is likely to form ad
267 osensor internal ribosome entry site (thermo-IRES) elements, whose normalized cap-independent transla
269 umerous layers of Hox gene regulation, these IRES elements are essential for converting Hox transcrip
271 opological conservation observed among these IRESs and other viral domains implicates a structured th
277 ween bacterial and eukaryotic ribosomes this IRES binds directly to both and occupies the space norma
279 KH3 is critical for PCBP2's binding to this IRES whereas KH1 is essential for PCBP2's function in pr
281 light a process of noncanonical translation, IRES-mediated translation, that is a growing source for
282 arity to the 18S rRNA markedly reduced TriMV IRES activity, as did the delivery of antisense oligonuc
283 ficiency is lower than that of the wild-type IRES element, which on the other hand is fully resistant
285 out mice with either VGluT2-IRES-cre or Vgat-IRES-cre mice and used both male and female mice to conf
286 onditional knock-out mice with either VGluT2-IRES-cre or Vgat-IRES-cre mice and used both male and fe
292 e, this is the first report of a plant viral IRES YX-AUG motif, and our findings suggest that a conse
293 The tRNA shape-mimicry enables the viral IRES to gain access to the ribosome tRNA-binding sites a
294 nce conservation, suggesting that this viral IRES and cellular IRES may have similar strategies for i
297 ution crystal structure of hepatitis A virus IRES domain V (dV) in complex with a synthetic antibody
301 We further demonstrate that co-therapy with IRES-J007 and PP242 significantly reduces tumor growth o