* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download RNA and Protein Synthesis
Transcription factor wikipedia , lookup
Gel electrophoresis of nucleic acids wikipedia , lookup
Genetic code wikipedia , lookup
Molecular evolution wikipedia , lookup
Molecular cloning wikipedia , lookup
Community fingerprinting wikipedia , lookup
RNA interference wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Cre-Lox recombination wikipedia , lookup
DNA supercoil wikipedia , lookup
Vectors in gene therapy wikipedia , lookup
Real-time polymerase chain reaction wikipedia , lookup
Promoter (genetics) wikipedia , lookup
Non-coding DNA wikipedia , lookup
Polyadenylation wikipedia , lookup
Messenger RNA wikipedia , lookup
Biosynthesis wikipedia , lookup
Silencer (genetics) wikipedia , lookup
RNA silencing wikipedia , lookup
RNA polymerase II holoenzyme wikipedia , lookup
Eukaryotic transcription wikipedia , lookup
Transcriptional regulation wikipedia , lookup
Gene expression wikipedia , lookup
Nucleic acid analogue wikipedia , lookup
Non-coding RNA wikipedia , lookup
RNA 12.3 What is RNA? Macromolecule made of nucleotides from DNA Used to build proteins. RNA is different from DNA 1. 2. 3. 4. Single stranded Uracil replaces Thymine Ribose instead of deoxyribose Can leave the nucleus 3 types of RNA 1.) mRNA m=messenger Long, stringy (like a snake) Function - Carries the instructions from the nucleus to the cytoplasm to initiate translation Codons = sequences of 3 bases Made during transcription 2.) tRNA t= transfer Shaped like a “hair pin” or a T Responsible for bringing the amino acids for translation Contains “anti-codons” that match up with mRNA temporarily 3.) rRNA rRNA = ribosomal Structurally part of the ribosome organelle Site of translation Globular shaped RNA is made through “Transcription” RNA is made in the nucleus like DNA replication Review the steps Transcription Unzip one gene in DNA Match up bases to one side of a gene in DNA mRNA detaches from the DNA mRNA moves out of the nucleus and into the cytoplasm Steps in transcription Making of RNA from DNA in the nucleus 1. 2. 3. Initiation at the promoter site by RNA polymerase opens up the DNA molecule Elongation adds new RNA bases, including Uracil, down the exposed DNA bases Termination occurs when RNA polymerase hits the “stop” signal and detaches the new single strand of RNA http://207.207.4.198/pub/flash/26/transmenu_s.swf In RNA: A binds with U C binds with G DNA strand: GAG AAC TAG TAC RNA: CUC UUG AUC AUG Animation 1 http://www.stolaf.edu/people/giannini/flasha nimat/molgenetics/transcription.swf Animation 2 http://staff.concord.org/~btinker/workbench_ web/models/eukTranscription.swf