Eukaryotes Control Pr Synthesis
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Transcriptional Description
Regulates which genes are transcribed (DNA to mRNA) or controls the rate at which transcription occurs.
example of trancriptional pr synthesis
Methyl groups are added to cystine bases in promoter, RNA polymerase cant bind and transcribe.
Post-Transcriptional Description
Controls availabillity of mRNA molecules to ribosomes; pre-mRNA molecules undergo change in the nucleus, resulting in final mRNA before translation occurs.
Post-Transcriptional Example
-Alternative splicing, different combo of introns aee removed, remaining exons spliced tg.
Translational description
Controls how often and rapidly mRNA transcript will be translated into protiens.
example of translational
Variation of the length of the poly (A) tail is related to the rate of translation.
Decription of post-translational
Controls when protiens become fully functional, how long they are functional for, and when they are degraded.
Example of post-translatioal
Presence of hormone may lengthen or shorten time that protien is functional