• DRAMP ID

    • DRAMP00880
    • Peptide Name

    • Circulin-D (CIRD; Plant defensin)
    • Source

    • Chassalia parviflora
    • Family

    • Belongs to the cyclotide family
    • Gene

    • Not found
    • Sequence

    • KIPCGESCVWIPCVTSIFNCKCKENKVCYHD
    • Sequence Length

    • 31
    • Protein Existence

    • Protein level
    • Biological Activity

    • Antimicrobial, Antiviral
    • Target Organism

      • [Ref.10691702]Virus: HIV-1 (EC50= 50-275 nM).
      • NOTE: EC50 = concentration that is 50% effective.
      • [Ref.18008336]Virus:HIV:inhibition the cytopathic effects of HIV-1 infection in cultured human T-lymphoblast (CEM-SS) cells(EC50=50-275 nM).
    • Hemolytic Activity

      • No hemolysis information or data found in the reference(s) presented in this entry
    • Cytotoxicity

    • No cytotoxicity information found in the reference(s) presented
    • Binding Target

    • Not found
    • Linear/Cyclic

    • Cyclic
    • N-terminal Modification

    • Cyclization (N termini to C termini)
    • C-terminal Modification

    • Cyclization (N termini to C termini)
    • Nonterminal Modifications and Unusual Amino Acids

    • Disulfide bonds between Cys4 and Cys20, Cys8 and Cys22,Cys13 and Cys27.
    • Stereochemistry

    • L
    • Structure

    • Bridge
    • Structure Description

    • Not found
    • Helical Wheel Diagram

    • DRAMP00880 helical wheel diagram
    • PDB ID

    • None
    • Predicted Structure

    • There is no predicted structure for DRAMP00880.
    • Formula

    • C154H240N40O44S6
    • Absent Amino Acids

    • ALMQR
    • Common Amino Acids

    • C
    • Mass

    • 3548.2
    • PI

    • 7.77
    • Basic Residues

    • 5
    • Acidic Residues

    • 3
    • Hydrophobic Residues

    • 8
    • Net Charge

    • +2
    • Boman Index

    • -31.18
    • Hydrophobicity

    • -0.016
    • Aliphatic Index

    • 65.81
    • Half Life

      • Mammalian:1.3 hour
      • Yeast:3 min
      • E.coli:2 min
    • Extinction Coefficient Cystines

    • 7365
    • Absorbance 280nm

    • 245.5
    • Polar Residues

    • 13

DRAMP00880

DRAMP00880 chydropathy plot
    • Function

    • Probably participates in a plant defense mechanism. Inhibits the cytopathic effects of the human immunodeficiency virus.
    • PTM

    • This is a cyclic peptide which may contain three disulfide bonds 4-20; 8-22; 13-27.
  • ·Literature 1
    • Title

    • New circulin macrocyclic polypeptides from Chassalia parvifolia.
    • Reference

    • J Nat Prod. 2000 Feb;63(2):176-178.
    • Author

    • Gustafson KR, Walton LK, Sowder RC Jr, Johnson DG, Pannell LK, Cardellina JH Jr, Boyd MR.
  • ·Literature 2
    • Title

    • Cyclotides as natural anti-HIV agents.
    • Reference

    • Biopolymers. 2008;90(1):51-60.
    • Author

    • Ireland DC, Wang CK, Wilson JA, Gustafson KR, Craik DJ.