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Related Experiment Videos

What peptides these deltorphins be.

L H Lazarus1, S D Bryant, P S Cooper

  • 1Peptide Neurochemistry, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.

Progress in Neurobiology
|March 18, 1999
PubMed
Summary
This summary is machine-generated.

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Deltorphins, opioid peptides from Amazonian frogs, feature a unique D-amino acid for high receptor affinity and biostability. Research explores their structure-activity relationships and therapeutic potential.

Area of Science:

  • Biochemistry and Pharmacology
  • Peptide Science
  • Neuroscience

Background:

  • Deltorphins are selective delta-opioid heptapeptides isolated from Phyllomedusa frog skin.
  • Their discovery in 1987 was followed by identification of related peptides via cDNA cloning and isolation.
  • A key feature is the Tyr-D-Xaa-Phe sequence, conferring high delta-receptor affinity and biostability.

Purpose of the Study:

  • To review a decade of research on deltorphins and their interaction with delta-opioid receptors.
  • To characterize the pharmacological and physiological activities of deltorphins in vitro and in vivo.
  • To explore the potential clinical and therapeutic applications of these peptides.

Main Methods:

  • Peptide synthesis of deltorphin analogues (A, B, C) to study structure-activity relationships.

Related Experiment Videos

  • In vitro and in vivo assays to determine pharmacological activities.
  • Analysis of peptide conformation and ligand-receptor interactions.

    • Main Results:

    • Identified specific residues and substituents crucial for delta-receptor interaction.
    • Detailed structure-activity relationships and pharmacological profiles in extensive data tables.
    • Established a link between peptide conformation and receptor binding hypotheses.

    Conclusions:

    • Deltorphins possess remarkable biostability, high delta-receptor affinity, and bioactivity due to their unique structure.
    • Extensive research has elucidated their interaction mechanisms with delta-receptors.
    • Deltorphins show significant promise for future clinical and therapeutic applications.