General Information

  • ID:  hor001445
  • Uniprot ID:  P69146
  • Protein name:  FMRFamide
  • Gene name:  NA
  • Organism:  Alitta virens (Sandworm) (Nereis virens)
  • Family:  FARP (FMRFamide related peptide) family
  • Source:  animal
  • Expression:  NA
  • Disease:  NA
  • Comments:  NA
  • Taxonomy:  Alitta (genus), Nereididae (family), Phyllodocida (order), Errantia (subclass), Polychaeta (class), Annelida (phylum), Lophotrochozoa, Spiralia, Protostomia, Bilateria, Eumetazoa, Metazoa (kingdom), Opisthokonta, Eukaryota (superkingdom), cellular organisms
  • GO MF:  NA
  • GO BP:  GO:0007218 neuropeptide signaling pathway
  • GO CC:  GO:0005576 extracellular region

Sequence Information

  • Sequence:  FMRF
  • Length:  4
  • Propeptide:  FMRF
  • Signal peptide:  NA
  • Modification:  T4 Phenylalanine amide
  • Glycosylation:  NA
  • Mutagenesis:  NA

Activity

  • Function:  Myoactive; cardioexcitatory substance. Pharmacological activities include augmentation, induction, and regularization of cardiac contraction.
  • 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)
  •    hor001445_AF2.pdbhor001445_ESM.pdb

Physical Information

Mass: 65343 Formula: C29H41N7O5S
Absent amino acids: ACDEGHIKLNPQSTVWY Common amino acids: F
pI: 10.55 Basic residues: 1
Polar residues: 0 Hydrophobic residues: 2
Hydrophobicity: 75 Boman Index: -661
Half-Life: 1.1 hour Half-Life Yeast: 3 min
Half-Life E.Coli: 2 min Aliphatic Index 0
Instability Index: -1135 Extinction Coefficient cystines: 0
Absorbance 280nm: 0

Literature

  • PubMed ID:  2342992
  • Title:  Authentic FMRFamide is present in the polychaete Nereis virens.