Bio124S_07Present6-1

Bio124S_07Present6-1 - Proteins: Polymers of Amino Acids...

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Proteins: Polymers of Amino Acids Proteins have diverse structures and functions. • Each protein has a characteristic amino acid composition and order. • Proteins range in size from a few amino acids to thousands of them. • Folding is crucial to the function of a protein and is influenced largely by the
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Monomers of Proteins - Amino Acids • An amino acid has four groups attached to a central carbon atom: •A hydrogen atom An amino group (NH 3 + ) •A carboxyl group (COO–). •Differences in amino acids come from the side chains,
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Types of Side Chains (R groups) • Residues of amino acids are classified by their characteristics under physiological conditions. •Five have fully charged side chains. •Five have polar side chains. •Seven have nonpolar (hydrophobic) side chains. •Cysteine has a terminal
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Amino Acids with Charged Residues
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Amino Acids with Polar Residues (and special cases)
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Amino Acids with NonPolar Residues
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-> Proteins • Condensation
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Bio124S_07Present6-1 - Proteins: Polymers of Amino Acids...

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