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Unformatted text preview: corresponds with the codons of the mRNA. Also there are start codons and stop codons that initiate and terminate the protein synthesis. AUG is the start codon and UAG, UAA, UGA are the stop codons. You can remember this by thinking that since "A" is in the beginning of the alphabet, it starts, and since U comes near the end, it is the stop codon. Also on the ribosomes there are three different sites for the tRNA. E, P, and A. An easy mnemonic would be, Attaching site for A Producing site for P Exiting site for E. The tRNA attaches to the A site then is slided over to P, then when the next tRNA is attached to the A site, the amino acid of the P forms a peptide bond with the new amino acid in site A. The "empty" tRNA in site P then slides over the site E and is exited from the ribosome....
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This note was uploaded on 11/19/2010 for the course BIOLOGY 93 taught by Professor O during the Spring '08 term at San Diego.
- Spring '08