Chapter_4 - Chapter 4 Amino Acids amino -NH2 20 amino acids...

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C NH 3 + R H O O - 1 Chapter 4 Amino Acids amino + carbon α α -NH 2 -COOH 20 amino acids C H COOH R N H 2 Properties - known as dipolar ion o charged grps of opposite sides Peptide bond CO-NH linkage (amide linkage) 3 types of amino acids 1) nonpolar R groups 2) uncharged polar R groups 3) charged polar R groups isoelectric point, pI pH at which a molecule carries no electric charge
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H H NH 3 + O O - H CH 3 NH 3 + O O - H NH 3 + O O - CH 3 CH 3 H NH 3 + O O - CH 3 C H 3 H NH 3 + O O - CH 3 H NH 3 + O O - S CH 3 N H O O - H NH 3 + O O - H NH 3 + O O - N H 2 Nonpolar side chains glycine alanine valine leucine isoleucine methionine proline phenylalanine
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Chapter_4 - Chapter 4 Amino Acids amino -NH2 20 amino acids...

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