BIOL 200 Lecture Notes - Transcription Preinitiation Complex, Phenylalanine, Aminoacyl Trna Synthetase

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The central dogma represents the mechanisms through which a gene (dna) is able to synthesize various proteins which carry out specific tasks in the cell. In prokaryotes (although the process is not so different in eukaryotes), the following ingredients are needed in transcription: Dna template, which served as a blueprint. Ribonucleoside triphosphates (rntps: serve as the monomers of the rna sequence during polymerization. Rna polymerase: an enzyme which catalyzes rna synthesis. All three of these items are found in both prokaryotes and eukaryotes during transcription. Transcription takes place only using the template strand: transcription begins at the +1 site on the. The promoter is a sequence of dna directly upstream (5" 3") from the +1 site. The coding sequence begins at the +1 site and is used to make the rna sequence. The transcription process must first be initiated by the following 3 steps.

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