genetics - transcription (functions)

messenger RNA, used for transcription, carriers the genetic code

vary in length and function, do not encode for proteins

(ribosomal RNA) a part of ribosomes, used for translation

(transfer RNA): used for translation, carries amino acids

(small nuclear RNA): used for mRNA processing and intron removal

(mirco RNA and small interfering RNA): regulatory RNA

-10 bp upstream

-35 bp upstream

a holoenzyme composed of several subunits, unwinds DNA

help assemble the enzyme

active in catalysis

binds the DNA

helps assemble the holoenzyme

binds to the promoter until transcription begins and initiates the first unwinding

protects the mRNA from degradation as its transported across the nuclear envelope and the introns are spliced out

facilitating transport of mRNA across the nuclear membrane, protecting the mRNA from degradation, and enhancing translation by enabling ribosomal recognition of the mRNA