IRESite record type: plasmid_with_promoter_and_putative_IRES_translationally_characterized
The shape of the nucleic acid molecule translated: linear
The quality of the mRNA/+RNA sequence: end-to-end_full-length_mRNA
The mRNA/+RNA description:
In vitro T3 run-off transcript produced from bicistronic plasmid pRBL which comprises renilla and firefly
luciferases as the first and the second cistron, respectively and the almost full-length 5'-UTR (nt from -219
to -3) of BiP RNA. These mRNAs are bearing a poly(A) tail.
The mRNA/+RNA sequence represented in the +DNA notation:
Credibility of mRNA sequence: end-to-end_sequence_completely_same_as_in_the_experiment
The name of the promoter used to express this mRNA: T3
Description of the plasmid (facultative for promoter-less plasmid records): Plasmid containing almost the full-length 5'-UTR of BiP mRNA (nt from -219 to -3) inserted between renilla and
firefly luciferase reporter genes, with the poly(A)tract.
The in vivo produced transcripts are heterogeneous (due to any of promoter?/splicing?/cleavage?/breakage?): not tested
The in vivo produced heterogeneous transcripts occur due to alternative splicing: not tested
A promoter reported in cDNA corresponding to IRES sequence: not tested
The abbreviated name of the donor gene or virus from which this IRES was excised and inserted into the plasmid: BiP
The description of the protein encoded in this ORF: firefly luciferase
The translational frameshift (ribosome slippage) involved: 0
The ribosome read-through involved: no
The alternative forms of this protein occur by the alternative initiation of translation: not tested
The ORF absolute position (the base range includes START and STOP codons or their equivalents): 1225-2880
IRESite notes about verification of plasmid sequence:
The complete sequence of IRES element was determined by sequencing using Fluc_seq_reverse
For detailed verification of whole plasmid sequence see item IRESite Id: 413.
The translation method used to study IRES function: in vitro
The in vitro translation system: HeLa cell lysate
The organism used for translation:
The temperature (in degrees of Celsia): 37
The relative translation efficiency in % of this IRES: 100.000
Name of the plasmid used as the negative control. pRBL
IRESite Id of the plasmid used as negative control. 411
The relative translation efficiency in % of the negative control: 19.000
The size (length) of intercistronic region in the negative control: 232
The effect of 5'-cap analogs on translation: no
Rapamycin affects translation: not tested
Type of RNA subject to translation: exogenous_RNA_with_GpppG_cap_with_polyA_tail
Whereas the cap-dependent translation of the 5' cistron (RLuc) in the bicistronic reporter mRNAs is strongly
inhibited by adding 7mGpppG analog, the BiP IRES-driven translation of the 3' cistron (FFLuc) is not
significantly affected. By contrast, addition of ApppG, cap analog that does not bind the translation
initiation factor eIF4E, does not significantly impair translation from either cistron.
The translation of BiP.IRES-pA RNA is about 5-fold higher efficient than the translation of the
non-polyadenylated counterpart BiP.IRES RNA (IRESite Id: 411).
Translational data are derived from Table 1.
Last change to the database: 2019-03-18 09:32:49 GMT+1