General Information


DRAVP ID  DRAVPe00285

Peptide Name   Cycloviolin-B (Plant defensin)

Sequence  GTACGESCYVLPCFTVGCTCTSSQCFKN

Sequence Length  28

UniProt ID  P84638 

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  DRAVPe00285

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 Cys4 and Cys18, Cys8 and Cys20,Cys13 and Cys25.

Stereochemistry  L



Physicochemical Information


Formula  C120H185N31O41S6

Absent amino acids  DHIMRW

Common amino acids  C

Mass  2910.33

Pl  5.96

Basic residues  1

Acidic residues  1

Hydrophobic residues  6

Net charge  0

Boman Index  -1389

Hydrophobicity  38.93

Aliphatic Index  38.21

Half Life 

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

Extinction Coefficient cystines  1865

Absorbance 280nm  69.07

Polar residues  18



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