General Information

    • DRAMP ID

    • DRAMP18122

    • Peptide Name

    • Mu-agatoxin-Hc1a (Mu-AGTX-Hc1a; Curtatoxin-1; CT-I)

    • Source

    • Hololena curta (Funnel-web spider) (Agelena curta)

    • Family

    • Belongs to the beta/delta-agatoxin family

    • Gene

    • Not found

    • Sequence

    • SCVGEYGRCRSAYEDCCDGYYCNCSQPPYCLCRNNN

    • Sequence Length

    • 36

    • Protein Existence

    • Protein level

Activity Information

    • Biological Activity

    • Insecticidal

    • Target Organism

    • A.domestica (LD50=20 μg/g)

    • Hemolytic Activity

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

    • Cytotoxicity

      • Not included yet

    • Binding Target

    • Not found

Structure Information

    • 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

    • DRAMP18122 helical wheel diagram

    • PDB ID

    • None

    • Predicted Structure

    • There is no predicted structure for DRAMP18122.

Physicochemical Information

    • Formula

    • C165H242N50O58S8

    • Absent Amino Acids

    • FHIKMTW

    • Common Amino Acids

    • C

    • Mass

    • 4110.52

    • PI

    • 4.78

    • Basic Residues

    • 3

    • Acidic Residues

    • 4

    • Hydrophobic Residues

    • 3

    • Net Charge

    • -1

    • Boman Index

    • -9499

    • Hydrophobicity

    • -0.792

    • Aliphatic Index

    • 21.67

    • Half Life

      • Mammalian:1.9 hour
      • Yeast:>20 hour
      • E.coli:>10 hour

    • Extinction Coefficient Cystines

    • 7950

    • Absorbance 280nm

    • 227.14

    • Polar Residues

    • 23

DRAMP18122

DRAMP18122 chydropathy plot

Comments Information

    • Function

    • Insecticidal neurotoxin that induces irreversible neuromuscular blockade in the cricket A.domestica. Modifies presynaptic voltage-gated sodium channels (Nav), causing them to open at the normal resting potential of the nerve. This leads to spontaneous release of neurotransmitter and repetitive action potentials in motor neuronS.

Literature Information

  • ·Literature 1

    • Title

    • CurtatoxinS. Neurotoxic insecticidal polypeptides isolated from thefunnel-web spider Hololena curta.

    • Reference

    • J. Biol. CheM. 265:2054-2059 (1990).

    • Author

    • Stapleton A., Blankenship D.T., Ackermann D.L., Chen T.-M. , Gorder G.W., Manley G.D., Palfreyman M. G., Coutant J.E., Cardin A.D.
  • ·Literature 2

    • Title

    • Agatoxins: ion channel specific toxins from the American funnel webspider, Agelenopsis aperta.

    • Reference

    • Toxicon 43:509-525 (2004).

    • Author

    • Adams M. E.