BIOL 1001 Lecture 10: CH 10 Outline
1 Dec 2017
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Marine mussel (mytilus californicus) manufactures ultimate underwater adhesive. Mussel binds itself to rocks with threads coated with byssus: chapter 10: gene expression and regulation. Same two steps produce all proteins: dna is transcribed to form rna. Yeast synthesize the protein based on the instructions in the mussel dna. Gene for byssus has been put into yeast. How are genes and proteins related: rna is translated to form polypeptide chains, which fold to form proteins. Gene: segment of dna located at a particular place on a chromosome. A specific amino acid sequence in a protein. Gene protein or rna to make protein. Nucleotides added in 5" to 3" direction. Product is a single strand of rna. Uracil pairs with adenine (instead of thymine) Small subunit/trna complex attaches to mrna and moves along it to an aug start codon. Elongation mrna passes through ribosomal subunits trnas deliver amino acids to the ribosomal binding site in the order specified by the mrna.
