General Information


DRAVP ID  DRAVPe01560

Peptide Name   Retrocyclin-2 (RC2; HTD-2)

Sequence  GICRCICGRRICRCICGR

Sequence Length  18

UniProt ID  No entry found

Source  Synthetic construct

Other Link  DRAVPa0166



Activity Information


Target Organism  HIV

Assay 

Activity 

  • [Ref.15210812]HIV-1 A:inhibition of infection in JC53-BL cells(IC50=2.30 ± 1.41 µg/ml);
  • HIV-1 B:inhibition of infection in JC53-BL cells(IC50=1.05± 0.28 µg/ml);
  • HIV-1 C:inhibition of infection in JC53-BL cells(IC50=3.32 ± 0.76 µg/ml);
  • HIV-1 CRF01_AE:inhibition of infection in JC53-BL cells(IC50=1.14 ± 0.29 µg/ml);
  • HIV-1 D:inhibition of infection in JC53-BL cells(IC50=3.17 ± 1.53 µg/ml);
  • HIV-1 G:inhibition of infection in JC53-BL cells(IC50=3.06 ± 0.43 µg/ml);
  • HIV-1 BF:inhibition of infection in JC53-BL cells(IC50=0.18 µg/ml).

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  gp120,CD4

Mechanism  The peptide binds to gp120 and CD4, thereby inhibiting HIV entry.



Structure Information


PDB ID  2LZI 

Predicted Structure Download  DRAVPe01560

Linear/Cyclic  Cyclic

N-terminal Modification  Free

C-terminal Modification  Free

Other Modification  Disulfide bonds between Cys3 and Cys16,Cys5 and Cys14,Cys7 and Cys12.

Stereochemistry  L



Physicochemical Information


Formula  C78H145N33O19S6

Absent amino acids  ADEFHKLMNPQSTVWY

Common amino acids  C

Mass  2041.58

Pl  9.3

Basic residues  5

Acidic residues  0

Hydrophobic residues  4

Net charge  5

Boman Index  -4442

Hydrophobicity  51.67

Aliphatic Index  86.67

Half Life 

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

Extinction Coefficient cystines  375

Absorbance 280nm  22.06

Polar residues  9



Literature Information


Literature 1

Title   Activity of alpha- and theta-defensins against primary isolates of HIV-1.

Pubmed ID   15210812

Reference   J Immunol. 2004 Jul 1;173(1):515-20.

Author   Wang W, Owen SM, Rudolph DL, Cole AM, Hong T, Waring AJ, Lal RB, Lehrer RI.

DOI   10.4049/jimmunol.173.1.515