General Information


DRAVP ID  DRAVPe00444

Peptide Name   IPB02(SARS-CoV-2-S (1169-1203)-K)

Sequence  ISGINASVVNIQKEIDRLNEVAKNLNESLIDLQELK

Sequence Length  36

UniProt ID  P59594  P0DTC2 

Source  Synthetic construct(derived from SARS-CoV-2 S protein)



Activity Information


Target Organism  SARS-CoV-2,SARS-CoV,VSV

Assay  cell fusion assay, single-cycle infection assay

Activity 

  • [Ref.32376627]SARS-CoV-2:ihibition of cell-cell fusion in 293T/ACE2 cells(IC50=0.025 ± 0.002 µM),inhibition of Pseudovirus (PsV) infection in 293T/ACE2 cells(IC50=0.08±0.017 µM);
  • SARS-CoV:inhibition of Pseudovirus (PsV) infection in 293T/ACE2 cells(IC=0.251 ± 0.118 µM);
  • Vesicular Stomatitis Virus (VSV):inhibition of Pseudovirus (PsV) infection in 293T/ACE2 cells(IC50>50 µM).

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  membrane

Mechanism  The peptide was designed based on HR2 sequence lipopeptide fusion inhibitor,which showed highly potent activities in inhibiting SARS-CoV-2 S protein-mediated cell-cell fusion and pseudovirus transduction. It can also inhibit the SARS-CoV pseudovirus efficiently.



Structure Information


PDB ID  None

Predicted Structure Download  DRAVPe00444

Linear/Cyclic  Linear

N-terminal Modification  Free

C-terminal Modification  Chol

Other Modification  None

Stereochemistry  L



Physicochemical Information


Formula  C174H299N49O59

Absent amino acids  CFHMPTWY

Common amino acids  ILN

Mass  4021.58

Pl  4.66

Basic residues  4

Acidic residues  6

Hydrophobic residues  15

Net charge  -2

Boman Index  -6485

Hydrophobicity  -18.89

Aliphatic Index  138.06

Half Life 

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

Extinction Coefficient cystines  0

Absorbance 280nm  0

Polar residues  9



Literature Information


Literature 1

Title   Design of Potent Membrane Fusion Inhibitors against SARS-CoV-2, an Emerging Coronavirus with High Fusogenic Activity.

Pubmed ID   32376627

Reference   J Virol. 2020 Jul 1;94(14):e00635-20.

Author   Zhu Y, Yu D, Yan H, Chong H, He Y.

DOI   10.1128/JVI.00635-20