Amino Acids

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  • Amino Acids
    • 20 different amino acids in body. These are alpha amino acids
      • Made up of a basic amine group and an acidic carboxyl group
    • General formula of alpha amino acid is RCH(NH2)COOH
      • R group is usually carbon-containing group that may also contain an OH, COOH, SH OR NH2 group
    • Amino acids are amphoteric-they can react with both acids and bases
      • At a pH more acidic (lower) than the isoelectric point, the amino acid acts as a base and accepts a proton from the acid. The amino acid forms a positively charged ion
      • At a pH more alkaline (higher) than the isoelectric point, the amino acid acts as an acid and donates a proton to the base. The amino acid forms a negatively charged ion

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