Unformatted text preview: the cytoplasm. • The product of an expressed gene can be mRNA, tRNA, rRNA, and polypeptides. • A number of different types of RNA exist in prokaryotic and eukaryotic cells. Type of RNA Structure/Location Function mRNA tRNA rRNA • The overall structure of RNA is linear (sometimes 3D). An example of 3D RNA is tRNA. • You have a sugar phosphate backbone and it has a 5’ phosphate group and a 3’ hydroxyl group. • The nucleotides can only be added to the 3’ hydroxyl group. The synthesis of RNA runs from 5’ to 3’. • At the active site, there was a peptide bond being made between amino acids. • tRNA is just like mRNA which has a 5’ and 3’ end. There is an anticodon and runs 3’ to 5’. • There are hydrogen bonds between the bases and which make an antiparallel pattern. (UA and TG like in DNA) • The triplet code which is a group of 3 nucleotides to make one amino acid....
View Full Document
- Fall '09
- DNA, hydroxyl group, mRNA tRNA rRNA, RNA Structure/Location Function