General Information


DRAVP ID  DRAVPe00284

Peptide Name   Cycloviolin-A (Plant defensin)

Sequence  GVIPCGESCVFIPCISAAIGCSCKNKVCYRN

Sequence Length  31

UniProt ID  P84637 

Taxon ID  None

Source  Leonia cymosa (Sacha uba)

Validation   Experimentally Validated



Origin Information


Gene Name/ID  Not Available

GenBank  Not Available

Amino Acid position  Not Available

Domain Accession ID  Not Available

Nucleotide sequence ID  Not Available

Molecular Type  Not Available

Chromosomal Position  Not Available



Activity Information


Target Organism  HIV

Assay 

Activity 

  • [Ref.18008336]HIV:inhibition the cytopathic effects of HIV-1 infection in cultured human T-lymphoblast (CEM-SS) cells(EC50=130 nM).

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

Cytotoxicity 

  • [Ref.18008336]CEM-SS cells:IC50=560 nM.

Binding Target  Not found

Mechanism  No machanism information found in the reference(s) presented in this entry



Structure Information


PDB ID  None

Predicted Structure Download  DRAVPe00284

Linear/Cyclic  Cyclic

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

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

Other Modification  Disulfide bonds between Cys5 and Cys21, Cys9 and Cys23,Cys14 and Cys28.

Stereochemistry  L



Physicochemical Information


Formula  C137H224N38O40S6

Absent amino acids  DHLMQTW

Common amino acids  C

Mass  3235.88

Pl  8.33

Basic residues  3

Acidic residues  1

Hydrophobic residues  10

Net charge  2

Boman Index  -755

Hydrophobicity  68.06

Aliphatic Index  84.84

Half Life 

  •     Mammalian:30 hour
  •     Yeast:>20 hour
  •     E.coli:>10 hour

Extinction Coefficient cystines  1865

Absorbance 280nm  62.17

Polar residues  15



Literature Information


Literature 1

Title   Cyclotides as natural anti-HIV agents.

Pubmed ID   18008336

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

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

DOI   10.1002/bip.20886