• DRAMP ID

    • DRAMP03999
    • Peptide Name

    • [A6]-IsCT (Mutant: W6A; IsCT analog)
    • Source

    • Synthetic construct
    • Family

    • Not found
    • Gene

    • Not found
    • Sequence

    • ILGKIAEGIKSLF
    • Sequence Length

    • 13
    • UniProt Entry

    • No entry found
    • Protein Existence

    • Synthetic
    • Biological Activity

    • Antimicrobial, Antibacterial, Anti-Gram+, Anti-Gram-
    • Target Organism

      • [Ref.15369808]Gram-negative bacteria: Escherichia coli KCTC 1682 (MIC=64 µM), Pseudomonas aeruginosa KCTC 1637 (MIC=32 µM), Salmonella typhimurium KCTC 1926 (MIC>64 µM);
      • Gram-positive bacteria: Staphylococcus epidermidis KCTC 1917 (MIC>64 µM), Staphylococcus aureus KCTC 1621 (MIC>64 µM).
    • Hemolytic Activity

      • [Ref.15369808]Non-hemolytic activity
    • Cytotoxicity

      • Not included yet
    • Binding Target

    • Cell membrane
    • Linear/Cyclic

    • Not included yet
    • N-terminal Modification

    • Not included yet
    • C-terminal Modification

    • Not included yet
    • Nonterminal Modifications and Unusual Amino Acids

    • Not included yet
    • Stereochemistry

    • Not included yet
    • Structure

    • Not found
    • Structure Description

    • Not found
    • Helical Wheel Diagram

    • DRAMP03999 helical wheel diagram
    • PDB ID

    • None
    • Predicted Structure

    • Formula

    • C66H113N15O17
    • Absent Amino Acids

    • CDHMNPQRTVWY
    • Common Amino Acids

    • I
    • Mass

    • 1388.71
    • PI

    • 8.59
    • Basic Residues

    • 2
    • Acidic Residues

    • 1
    • Hydrophobic Residues

    • 7
    • Net Charge

    • +1
    • Boman Index

    • 9.96
    • Hydrophobicity

    • 0.985
    • Aliphatic Index

    • 157.69
    • Half Life

      • Mammalian:20 hour
      • Yeast:30 min
      • E.coli:>10 hour
    • Extinction Coefficient Cystines

    • 0
    • Absorbance 280nm

    • 0
    • Polar Residues

    • 3

DRAMP03999

    • Function

    • [A6]-IsCT did not cause any hemolysis at peptide concentrations as high as 100 µM, indicating that Trp6 is important for both the hemolytic activity and antibacterial activity of IsCT.
    • Chemical modification

    • C-terminal amidation.
  • ·Literature 1
    • Title

    • Antibiotic activity and structural analysis of the scorpion-derived antimicrobial peptide IsCT and its analogs.
    • Reference

    • Biochem Biophys Res Commun. 2004 Oct 15;323(2):712-719.
    • Author

    • Lee K, Shin SY, Kim K, Lim SS, Hahm KS, Kim Y.