ProteinSynthesisI

ProteinSynthesisI - PROTEIN SYNTHESIS ! Use of DNA...

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PROTEIN SYNTHESIS ! Use of DNA information to synthesize proteins ! Transcription of DNA information
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Genes (DNA information) are used to synthesize enzymes Mutation in gene no:
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The colinearity of DNA and proteins DNA information is stored in the base sequence. Enzyme function depends on the protein’s structure. Protein structure depends on the amino acid sequence. Thus DNA base sequence must determine protein amino acid sequence (through a “genetic code”). amino acid 1 amino acid 2 amino acid 3 amino acid 4
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amino acid 1 amino acid 2 amino acid 3 amino acid 4 How many DNA bases are needed to “code” for one amino acid? There are four kinds of bases (base pairs). There are 20 kinds of amino acids (plus “stop” signs). Thus, the cells must use permutations of multiple bases to code for one amino acid.
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Three bases make a “codon.” (Degenerate, but not ambiguous)
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Transcription: RNA synthesis ! DNA is not directly involved in protein synthesis !
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This note was uploaded on 06/18/2010 for the course BIS 103 taught by Professor Abel during the Spring '08 term at UC Davis.

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ProteinSynthesisI - PROTEIN SYNTHESIS ! Use of DNA...

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