BIOL 1090 Lecture Notes - Lecture 10: Tata Box, Caat Box, Endonuclease
Document Summary
The nature of the gene and its expression transcription. Gene > transcription = mrna > translation = protein. General features of rna synthesis from dna template. Rna pentose sugar is a ribose not a deoxyribose. Mrna = 5" to 3" also a bind to u, t binds to a. Rna polymerase begins transcription and is the causes it to dissociate at the end of a gene. Genes are closely spaced and several can be transcribed on a single rna molecule from common promoter. Primary transcript is processed in the nucleus and exported to the cytoplasm for translation. Eukaryotic rna polymerases cannot initiate transcription on their own, require transcription factors to bind to the promoter to help assemble/stabilize the polymerase. Addition of poly(a) tail by poly(a) polymerase. Poly(a) tail is added by template independent rna polymerase. A gene consists of its promoter and the transcribed sequence. Introns are noncoding sequences located between coding sequences.
