File: DNA Transcription - A (simplified) Simulation using a Corticon Rule Model

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This Corticon rule model shows a simple simulation of the process of DNA transcription The basic process: First the mRNA attaches itself to a ribosome. Six bases of the mRNA are exposed. A complementary tRNA molecule with its attached amino acid base pairs via its anticodon with the mRNA in the first position Another tRNA base pairs with the other three mRNA bases in the ribosome. The enzyme peptidyl transferase forms a peptide bond between the two amino acids. The first tRNA (without its amino acid) leaves the ribosome. The ribosome moves along the mRNA to the next codon (three bases). The second tRNA molecule moves into the first position. Another tRNA molecule pairs with the mRNA in the second position bringing its amino acid. A growing polypeptide is formed in this way until a stop codon is reached.

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