Flashcards in RNA structure and function Deck (14)
What makes ribonucleic acid different from deoxyribonucleic acid?
Ribonucleic acid has an -OH group at the second carbon on the ring
There is an A form and a B form of helix. Which refers to DNA and RNA respectively?
B form: DNA
A form: RNA
Describe the major and minor grooves on RNA respective to DNA
RNA has a much narrower and deeper major groove, and a shallower minor groove compared to DNA
Define group 1 of self-splicing introns
A group of self-splicing introns that release a linear form of the excised sequence
Define group 2 of self-splicing introns
A group of self-splicing introns that release a lariat form of the excised sequence
What is the characteristic structure of Type 1 self-splicing introns?
Secondary structure has 9 helices
What structure allows for self-cleaving of RNA?
If we provide excess substrate to an RNA enzyme strand, what is the observed cycle
Define 6-methyl adenosine
Located in the last exon and near to stop codon, or bound to sites for microRNAs . It is associated with the degradation of mRNAs
What polymerase is responsible for the production of ribosomal RNA?
RNA polymerase 1
Which portions of the RNA polymerase 1 are all created from the same strand?
18s (small part), 5.8s and 28s (large part)
What is the one part of the RNA polymerase 1 that is not part of the one strand?
What is the role of guide RNA in the context of ribosomal RNA?
position themselves on the rRNA to attract enzymes that modify RNA