Biology 1202B Lecture Notes - Spliceosome, Dogma, Tata Box
Document Summary
Lecture 3: transcription, chapter 14, 15 similarity and differences between transcription in prokaryotes and eukaryotes cell transcription and transla- tion occurs simultane- ously in prokaryote. Transcription plex a rna and dna hybrid, but then rna starts to. Initially there is a du- come out near the tail ie the green one. Elongation: reading the string of nucleotides in a sequence of single stranded dna and changing this information into a string of nucleotides of single strand- ed pre-mrna. Termination: releas- and a single mrna produced scription the transcription components on the promoters ing pre-mrna. In nucleus, pre-mrna is processed into mrna dna has a promoter, 5" to 3" utr + most genes have in- trons and need to get rid of them and splice it together. 1. capping, 2. poly a tail 3. splicing of the intron, premature mrna = need to become mature, ready for translation.