General Information


DRAVP ID  DRAVPe00720

Peptide Name   CPR

Sequence  CPFVFLR

Sequence Length  7

UniProt ID  No entry found

Taxon ID  None

Source  Synthetic construct(derived from the C-terminal sequence of α1-antitrypsin)

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.22406118]HIV-1 IIIB:inhibition of virus replication(IC50=74.07± 22.84 μM);inhibition of cell-cell fusion between H9/HIV-1IIIB cells and MT-2 cells(IC50=73.98 ± 7.44 μM).

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

Cytotoxicity 

  • [Ref.22406118]MT-2 cells:CC50>200 μM.

Binding Target  Not found

Mechanism  The cyclic peptide inhibited HIV-1 infection by blocking virus fusion with and entry into the target cells.



Structure Information


PDB ID  None

Predicted Structure Download  DRAVPe00720

Linear/Cyclic  Cyclic

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

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

Other Modification  None

Stereochemistry  L



Physicochemical Information


Formula  C43H64N10O8S

Absent amino acids  ADEGHIKMNQSTWY

Common amino acids  F

Mass  881.1

Pl  8.25

Basic residues  1

Acidic residues  0

Hydrophobic residues  4

Net charge  1

Boman Index  128

Hydrophobicity  142.86

Aliphatic Index  97.14

Half Life 

  •     Mammalian:1.2 hour
  •     Yeast:>20 hour
  •     E.coli:>10 hour

Extinction Coefficient cystines  0

Absorbance 280nm  0

Polar residues  1



Literature Information


Literature 1

Title   Short cyclic peptides derived from the C-terminal sequence of α1-antitrypsin exhibit significant anti-HIV-1 activity.

Pubmed ID   22406118

Reference   Bioorg Med Chem Lett. 2012 Apr 1;22(7):2393-5. 

Author   Jia Q, Jiang X, Yu F, Qiu J, Kang X, Cai L, Li L, Shi W, Liu S, Jiang S, Liu K.

DOI   10.1016/j.bmcl.2012.02.037