BIO 3170 Study Guide - Midterm Guide: Euchromatin, Lysine, Nucleosome

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Core promoter: composed of the tata box (basal promoter, location: near the transcriptional start site, rna polymerase will tart at the transcipitonal start site to initiate the transcription of. Inr (initator elements: a sequence that is important for a core promoter, location: right underneath the inr. Dre (downstream promotor element: location: it can be downstream (3") or upstream to the tss (5") Those 3 sites are necessary for the recruitment of general transcription factors of rna polymerase ii. Re re: additional regulatory elements can be found in proximity to the tata box, we call this a proximal promoter. Once transcription has started, the transcript mrna contains:; 5"utr region (not translated): exon 1. Exon 2 exon 3 (will be translated): introns (not translated); 3utr; poly a binding site. Transcription ends after the poly a binding site. Product: precursor mrna processed into mature mrna: addition of a 5" cap and addition of aaaa tail and splicing out introns.