#peptide  amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein
  supertype:  amide  any organic compound containing the group -CONH2
  subtype:  fibrinopeptide  peptide released from the amino end of fibrinogen by the action of thrombin to form fibrin during clotting of the blood
  subtype:  polypeptide  a peptide containing 10 to more than 100 amino acids
  subtype:  endorphin  a neurochemical occurring naturally in the brain and having analgesic properties
     subtype:  enkephalin  an endorphin having opiate qualities

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