General Information

  • ID:  hor005971
  • Uniprot ID:  P30424
  • Protein name:  Bradykinin-potentiating peptide S4
  • Gene name:  NA
  • Organism:  Bothrops insularis (Golden lancehead) (Lachesis insularis)
  • Family:  Bradykinin-potentiating peptide family
  • Source:  animal
  • Expression:  Expressed by the venom gland.
  • Disease:  NA
  • Comments:  NA
  • Taxonomy:   Bothrops (genus), Crotalinae (subfamily), Viperidae (family), Colubroidea (superfamily), Serpentes (infraorder), Toxicofera , Episquamata , Unidentata , Bifurcata , Squamata (order), Lepidosauria (class), Sauria , Sauropsida , Amniota , Tetrapoda , Dipnotetrapodomorpha , Sarcopterygii (superclass), Euteleostomi , Teleostomi , Gnathostomata , Vertebrata , Craniata (subphylum), Chordata (phylum), Deuterostomia , Bilateria , Eumetazoa , Metazoa (kingdom), Opisthokonta , Eukaryota (superkingdom),cellular organisms
  • GO MF:  GO:0004857 enzyme inhibitor activity; GO:0008191 metalloendopeptidase inhibitor activity; GO:0030414 peptidase inhibitor activity; GO:0090729 toxin activity
  • GO BP:  GO:0008217 regulation of blood pressure; GO:0035821 modulation of process of another organism
  • GO CC:  GO:0005576 extracellular region

Sequence Information

  • Sequence:  QGGPPRPQIPP
  • Length:  11
  • Propeptide:  QGGPPRPQIPP
  • Signal peptide:  NA
  • Modification:  T1 Pyrrolidone carboxylic acid
  • Glycosylation:  NA
  • Mutagenesis:  NA

Activity

  • Function:  This peptide both inhibits the activity of the angiotensin-converting enzyme (ACE) and enhances the action of bradykinin by inhibiting the peptidases that inactivate it. It acts as an indirect hypotensive agent.
  • Mechanism:  NA
  • Cross BBB:  NA
  • Target:  NA
  • Target Unid:  NA
  • IC50: NA
  • EC50: NA
  • ED50: NA
  • kd: NA
  • Half life: NA

Structure

  • Disulfide bond:  NA
  • Structure ID:  NA

  • Structure: (PDB_ID-from https://www.rcsb.org/; AlphaFold_DB_ID-from https://alphafold.ebi.ac.uk/; hordbxxxxxx_AF2.pdb was predicted structure by AlphaFold2; hordbxxxxxx_ESM.pdb was predicted structure by ESMFold)
    •    hor005971_AF2.pdbhor005971_ESM.pdb

Physical Information

Mass: 132185 Formula: C51H82N16O14
Absent amino acids: ACDEFHKLMNSTVWY Common amino acids: P
pI: 10.55 Basic residues: 1
Polar residues: 2 Hydrophobic residues: 1
Hydrophobicity: -143.64 Boman Index: -1920
Half-Life: 0.8 hour Half-Life Yeast: 10 min
Half-Life E.Coli: >10 hour Aliphatic Index 35.45
Instability Index: 8087.27 Extinction Coefficient cystines: 0
Absorbance 280nm: 0

Literature

  • PubMed ID:  2386615
  • Title:  Primary structure and biological activity of bradykinin potentiating peptides from Bothrops insularis snake venom.