BIO130H1 Chapter Notes -Exon Junction Complex, Leucine, Polyadenylation

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BIO130H1 Full Course Notes
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If an amino acid enters this editing pocket, it is hydrolyzed from the amp and it released from the enzyme. Elongation factors drive translation forward and improves its accuracy. Aminoacyl-trnas are bent when bound to the gdp-form of ef-tu, this bent configuration allows codon pairing but prevents incorporation of the amino acid into the growing polypeptide chain. Shine-dalgarno sequence), that is located a few nucleotides upstream of the. A eukaryotic mrna generally encodes only a single protein. This frees the polypeptide from the trna and it is released into the cytoplasm. The ribosome then releases the mrna and separates into the large and small subunits, which can assemble on this or another mrna molecule to begin a new round of protein synthesis. Bio 130 week 5: they resemble a trna molecule which helps them enter the a-site on the ribosome and cause termination. If the ribosome reaches a premature stop codon and stalls, it senses the.

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