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: our_best_guess
The mRNA/+RNA description:
Putative in vivo transcript driven from CMV IE promoter and terminated after the SV40 late poly(A) signal
containing GLuc (Gaussia luciferase) and GFP cistrons separated by putative VEGF-A IRES from mouse.
The mRNA/+RNA sequence represented in the +DNA notation:
Credibility of mRNA sequence: end-to-end_sequence_reverse_engineered_and_should_match_experiment
The name of the promoter used to express this mRNA: CMV_IE
The in vivo produced transcripts are heterogeneous (due to any of promoter?/splicing?/cleavage?/breakage?): no
The in vivo produced heterogeneous transcripts occur due to alternative splicing: no
A promoter reported in cDNA corresponding to IRES sequence: no
Summary of possible issues when IRES cDNA is experimentally transcribed in vivo:
Summary of experiments studying integrity of the in vivo transcripts in a particular host:
Integrity (uniformity) of mRNA tested using Northern-blot: not_tested
Integrity (uniformity) of mRNA tested using RNase protection: not_tested
Integrity (uniformity) of mRNA tested using 5'-RACE: not_tested
Integrity (uniformity) of mRNA tested using primer extension : not_tested
Integrity (uniformity) of mRNA tested using RT-PCR: homogeneous_population_of_molecules_confirmed
Integrity (uniformity) of mRNA tested using real-time quantitative polymerase chain reaction (rtqPCR): not_tested
Integrity (uniformity) of mRNA tested using RNAi: not_tested
Integrity (uniformity) of mRNA tested using S1 nuclease mapping: not_tested
Cryptic promoter presence was confirmed by expression from a promoter-less plasmid: not_tested
Cryptic promoter presence was confirmed in an experimental setup involving inducible promoter: not_tested
Integrity (uniformity) of mRNA molecules or possible promoter presence expressed in vivo was tested using another method, please specify in Remarks: homogeneous_population_of_molecules_confirmed
The description of the protein encoded in this ORF: green fluorescent protein
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): 837-1559
Remarks:
The IRES sequence is a part of mouse VEGF-A 5'-UTR (while considering the AUG codon as the translation START
site). The alternative CUG codon is -534bp usptream. The "IRES" region is -133 to -1 upstream of the AUG
codon.
The IRES absolute position (the range includes START and STOP codons or their equivalents): 705-836
How IRES boundaries were determined: experimentally_determined
5'-end of IRES relative to last base of the STOP codon of the upstream ORF: 57
3'-end of IRES relative to last base of the STOP codon of the upstream ORF: 188
5'-end of IRES relative to first base of the START codon of the downstream ORF: -132
3'-end of IRES relative to first base of the START codon of the downstream ORF: -1
The sequence of IRES region aligned to its secondary structure (if available):
Remarks:
The IRES "activity" was about 20% of EMCV and in general, close to BiP, eIF4G, NRF, Rbm3, see Figures 1B and
1C. There were no splice donor nor acceptor sites unleashed in the sequence (nor by RT-PCR nor by functional
assay using MoMLV sensitive to altered levels of spliced messages of its own transcripts followed by the
putative IRES and GFP CDS.