A promoter reported in cDNA corresponding to IRES sequence: no (not convincing)
The total number of notable open-reading frames (ORFs): 1
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: homogeneous_population_of_molecules_confirmed
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: not_tested
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: not_tested
The description of the protein encoded in this ORF: Transcription factor AP-1 and proto-oncogene c-jun.
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: no
The ORF absolute position (the base range includes START and STOP codons or their equivalents): 302-1246
OPTIONAL: The function of the encoded protein
Transcription factor that recognizes and binds to the enhancer heptamer motif 5'-TGA[CG]TCA-3'.
Remarks:
c-jun 5'-UTR containing SP6 synthesized, uncapped, monocistronic mRNA is poorly translated in rabbit
reticulocyte lysate (the shorter 5'-UTR is the more protein is obtained). In contrast, capped, monocistronic
5'-UTR_c-jun + CAT could be read-through in vivo in transiently transfected cells. Transcript integrity
from cells expressing bicistronic mRNA was verified by Northern blot. No bicistronic mRNA tested in
vitro.
Warning: the ORF coordinates do not correspond to the GenBank annotation. According to the article the ORF is
302-1447. But, there is only one sequence from chicken in Genbank (a chromosomal fragment) which IRESite used
for this entry which (dropped the very first 499bp of the DNA and trailing sequence right after the first
poly(A) signal, as annotated in the GenBank file M57467.