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LEQ: How does RNA help to make a protein?. 10.10. Messenger RNA. The type of RNA that carriers the genetic information/message from DNA and coveys it to ribosomes where the information is translated into amino acid sequences. mRNA Editing.
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Messenger RNA • The type of RNA that carriers the genetic information/message from DNA and coveys it to ribosomes where the information is translated into amino acid sequences
mRNA Editing • Introns – noncoding sequences “intervening” sequences; cut out of final mRNA • Exons – parts of the gene that areexpressed as amino acids; “coding” or “expressed” sequences; splice together to form final mRNA
mRNA Editing • Prior to exiting the nucleus a cap (single G nucleotide) is added to mRNA and a tail (chain of 50 to 250 adininenucleuotides) • Cap and Tail serve to facilitate the movement of mRNA out of the nucleus AND to protect the coding sequence between the cap and tail