Transcription and mRNA processing - Khan Academy Transcription involves rewriting genetic information from DNA to mRNA, with RNA polymerase playing a crucial role In eukaryotic cells, DNA to mRNA transcription occurs within the nucleus, producing pre-mRNA This pre-mRNA undergoes processing, including the addition of a 5' cap, a poly-A tail, and splicing out introns, resulting in mature mRNA, which then leaves the nucleus for protein
Transcription factors (article) | Khan Academy Transcription: The key control point Transcription is the process where a gene's DNA sequence is copied (transcribed) into an RNA molecule Transcription is a key step in using information from a gene to make a protein If you're not familiar with those ideas yet, you might consider watching the central dogma video for a solid intro from Sal
Transcription and mRNA processing (article) | Khan Academy Transcription includes three steps: initiation (1), elongation (2), and termination (3) During initiation, RNA polymerase attaches to a gene’s promoter During elongation, RNA polymerase moves along the DNA molecule, synthesizing an mRNA molecule that is complementary to the template strand of the DNA
Eukaryotic pre-mRNA processing | RNA splicing (article) - Khan Academy After transcription of a eukaryotic pre-mRNA, its introns are removed by the spliceosome, joining exons for translation The intron products of splicing have long been considered 'junk' and destined only for destruction