BIOLOGY 1A03 Lecture Notes - Lecture 3: Aminoacyl Trna Synthetase, Eukaryotic Translation, Start Codon

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Rosa Da Silva

Document Summary

Identify the molecular components that are needed for translation. Explain the role played by the interacting molecular components during the translation process. Understand how all proteins are encoded for in a specific dna sequence. Unit 1 molecular components contribute to translation. Translation requires many components trna structure allows for specificity in translation. Each aminoacyl trna synthetase binds to one uncharged trna and orn corresponding amino acid. There is a specific enzyme for each amino acid. The enzyme attaches the amino acid to the 3" end of the trna. Note that the first base in the codon (cid:523)5" end(cid:524) pairs with the last base (cid:523)3" end(cid:524) in the anticodon. Unit 2 translation occurs in the cytosol of the cell. In prokaryotes assembly and translation occurs in the cytoplasm. As an mrna molecule is shifted through a ribosome, specific mrna codons are translated into amino acids one by one.