Biology 1002B Study Guide - Midterm Guide: Lac Repressor, Stop Codon, Tata-Binding Protein
Document Summary
Promoter - attracts the attention of rna polymeraise. Utr (untranslated region) - stretch of dna between promoter segment and start codon. Transcribed into rna, but not translated because it"s "upstream" of the start codon" Sd box (located in the utr) - helps the initiation of translation (in bacteria) by complementary base pairing before the start codon. Tata box - region where tata binding protein is bound to the promoter attracts rna polymeraise and other transcription factors. Peptide tag - aminoacid sequence that tells the cell where the rna should go from the chloroplast (i. e. to the; er, nucleus, chloroplast) This sequence appers in the coding region of the dna. Regulating enhansers/promoters = different expression of genes (by binding proteins onto them) Eukaryotes - 5" phosphate cap - recognized by the small ribosomal subunit and begins the ribosome scanning along the mrna. Enhansers - mrna pairs with itself trna pairs with itself.