Translation Decoding the message.

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Protein Synthesis Mrs. Harlin.

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Translation Decoding the message

Protein Synthesis DNA and RNA work together to produce proteins Remember: A protein is a specific sequence of amino acids

Protein Review Proteins are made by joining amino acids together into long chains, called polypeptides. The bond that forms between amino acids is called a peptide bond

The Genetic Code What is the genetic code, and how is it read? The genetic code is read three “letters” at a time, so that each “word” is three bases long and corresponds to a single amino acid. The first step in decoding genetic messages is to transcribe a nucleotide base sequence from DNA to RNA. Then the RNA is decoded to make a protein

Codons Each three-letter “word” in mRNA is known as a codon. A codon is a combination of 3 mRNA bases that codes for a specific amino acid.

Using your codon chart, determine the amino acid that would code for the mRNA sequences below: UAC: Tyrosine AUG: Start codon: tells the ribosome to start building a protein UGA: Stop codon: causes the ribosome to stop adding amino acids

Translation The process of assembling proteins from RNA RNA moves from the nucleus where it was transcribed from DNA. It moves into the cytoplasm to a ribosome which assembles the protein The codon on the mRNA matches up with the anticodon on the tRNA Translation Animation

Review DNA is transcribed into RNA then RNA is translated into proteins