Peptide Bonds

• Peptide Bond

  • Elimination of a water molecule
  • Dipeptides (2AA), Tripeptides (3AA), Oligopeptides (3-10 AA), Polypeptides(10+AA)

• Proteins: 1 or more polypeptides

  • ~40 to 4000 AA residues in proteins
  • average mass of an AA residue = ~110 D
  • proteins range from ~4 - 440 kD

• Peptide Chains

  • Described from N-terminus to C-terminus

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