Ch 5 proteins

Ch 5 proteins - Chapter Five The Proteins Proteins large...

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Chapter Five - The Proteins Proteins: large complex molecules composed of amino acids -Contain carbon, hydrogen, oxygen, and nitrogen -Primary source of nitrogen in our diets -20 different amino acids are used to make proteins Essential amino acids : cannot be produced by our bodies -Must be obtained from food Nonessential amino acids : can be made by our bodies How Are Proteins Made? -Proteins are long chains of amino acids. -Amino acids are joined to each other by peptide bonds -The structure of each protein is dictated by the DNA of a gene -the three-dimensional shape of a protein: - Is determined by the amino acids in the protein - Is critical to the proper function of the protein - Can be damaged by heat, acids, heavy metals, alcohol, and other substances Protein Synthesis -We need protein in diet to collect amino acids -Our bodies use the dietary amino acids to make our own protein -Proteins are synthesized in the body as a translation of our genes (DNA)
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Protein Structure Function is determined by structure. Primary structure –
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Ch 5 proteins - Chapter Five The Proteins Proteins large...

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