BIOL 1010 Lecture Notes - Start Codon, Primary Transcript, Snrnp
Document Summary
Information from dna is transmitted to dna when it is replicated. Information from dna is transmitted from dna to rna to proteins during phenotypic expression (transcription, translation) In the genetic code, nucleotide triplets specify amino acids. sequence in mrna that specifies which amino acid will be added to a growing polypeptide or that signals termination. Transcription occurs in three stages: initiation, elongation, termination. In eukaryotes, promoter is about 100 nucleotides long and contains: 1. Specific nucleotide sequences recognized by dna- binding proteins called transcription factors that help bring rna polymerase to the promoter. Rna polymerase ii cannot recognize promoter unless specific transcription factors are bound first. Tata box: a short nucleotide sequence in the promoter that contains t and a, located about 25 nucleotides from the start point: specific transcription factors bind here, rna polymerase recognizes the complex and binds. The initiation of transcription at a eukaryotic promoter.
