The pre-snRNA are transcribed and receive a 5’ monomethylguanosine cap in the nucleus.
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Small Cajal body-specific RNA 17 (also known as U12-22 scaRNA) is a type of small nuclear RNA which localises to the cajal bodies and proposed to guide the modification of RNA polymerase II transcribed spliceosomal RNAs U1, U2, U4, U5 and U12.
small Cajal body-specific RNA 18 (also known as U91 or U4-8) is a type of small nuclear RNA which localises to the cajal bodies and proposed to guide the modification of RNA polymerase II transcribed spliceosomal RNAs U1, U2, U4, U5 and U12.
Benoit Coulombe is a Canadian scientist whose research focuses on the mechanisms by which regulated protein–protein, protein–DNA and protein–RNA interactions control the activity of RNA polymerase II, the molecular machine that synthesizes all messenger RNA (mRNA) and some small-nuclear RNA (snRNA) in eukaryotes.