In contrast, previous studies revealed good correlations between the increased transcription amounts and euchromatin-associated epigenetic marks in the rat genes (Si, Rbp2, Slc2a5 and Slc5a1) involved in intestinal functions, under specific spatiotemporal or dietary conditions [ 36– 36].
When the transcription is activated, the RNA is expressed and the variable of the transcription process is the transcript amount, and not the presence of the gene that can be activated or inactivated.
The genomic approach entails screening various genes in a human or mouse's body for genetic markers, measuring the transcription level (amount of transcription) of each gene, and measuring the amount of RNA produced.
For reverse transcription, equal amounts of total RNA were transformed by oligo dT) and M-MLV reverse transcriptase (Promega).
For reverse transcription, equal amounts of DNA-free RNA (100 ng-1 μg) were retro-transcribed with SuperScript III First-Strand Synthesis SuperMix (Invitrogen) following the suggested conditions.
For reverse transcription of total RNA amount (2 µg) and first-strand synthesis of cDNA, SuperScript® III Reverse Transcriptase (Invitrogen) and oligo (dT 15 Primer (Promega) were applied.
While inherent constraints of reverse transcription limit the amount of truly "full-length transcript" produced during any RNA amplification scheme, it is nonetheless desirable for an amplification method to favor the production of long transcript.
Since this nascent transcription reflects the amount of active polymerases on the tested template, the results indicate that RNase P determines the transcription output by Pol I and Pol III.
To correct for variations in mRNA recovery and reverse transcription yield, the amount of BAFF cDNA was normalized with β-actin.
Thus, our study might indicate that the inhibition of Pol II transcription increases the amount of chromatin-associated U1-TAF15 snRNP through the recruitment of more TAF15 from the nuclear-'soluble' pool to chromatin.
