RNA Structure, Transcription and Editing Four RNA Bases Adenine NH2 N NH Guanine O N NH NH N O N NH Uracil Cytosine NH2 NH N O N NH2 NH O The Sugar HO OH O OH OH Ribose The Nucleotides A O HO P O N N O N O HO N HO P O N O OH O N NH O N O OH N NH2 HO P OH O U O NH N O OH OH O O OH G O N OH OH OH P NH2 C NH2 OH OH OH O The Central Dogma Transcription Transcription is the process by which RNA is built from a template of DNA Transcription Transcription - Initiation - RNA Polymerase Transcription - Elongation Transcription - Termination Editing mRNA Codons in RNA