Coding region: Difference between revisions

Revision as of 05:28, 18 April 2020

Revision as of 16:55, 6 August 2020

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== Structure and Function ==

[[File:Coding Region in DNA.png|thumb|398x398px|'''Transcription''': RNA Polymerase (RNAP) uses a template DNA strand and begins coding at the promoter sequence (green) and ends at the terminator sequence (red) in order to encompass the entire coding region into the product mRNA (teal). ''[I have a doubt if the 5' and 3' end are shown incorrectly in this figure]'']]

In [[DNA]], the coding region is flanked by the [[Promoter (genetics)|promoter sequence]] on the 5' end of the [[template strand]] and the termination sequence on the 3' end. During [[Transcription (biology)|transcription]], the [[RNA Polymerase|RNA Polymerase (RNAP)]] binds to the promoter sequence and moves along the template strand to the coding region. RNAP then adds RNA [[nucleotide]]s complementary to the coding region in order to form the [[mRNA]], substituting [[uracil]] in place of [[thymine]].<ref name=":2">Overview of transcription. (n.d.). Retrieved from <nowiki>https://www.khanacademy.org/science/biology/gene-expression-central-dogma/transcription-of-dna-into-rna/a/overview-of-transcription</nowiki>.</ref> This continues until the RNAP reaches the termination sequence.<ref name=":2" />