PSYCH 1X03 Lecture 8: Transcription
24 Jan 2018
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Document Summary
A key element of promoter in eukaryotes in the tata box which is a section of dna. The three sequential processes of transcription are initiation, elongation, and termination: a) in the initiation process, where does rna polymerase bind? the enzyme dna polymerase binds to the dna and unwinds it near the beginning of a gene. Prokaryotes have a tataat sequence instead of a. Rna is synthesizing in 5" to 3" direction using 3" to 5" dna strand as a template strand. The transcription of a protein coding gene is terminated when rna polymerase. Once rna polymerase binds to promoter and opens dna double helix, it starts to build the single stranded rna molecule. In prokaryotes one termination mechanism involves a protein binding to mrna or mrna binding with itself in a hairpin loop. In eukaryotes, one termination sequence is a string of adenines which are transcribed as a strung of u on rna.
