General Information

  • ID:  hor001769
  • Uniprot ID:  P38498
  • Protein name:  Cardio-excitatory FMRFamide homolog DF2
  • Gene name:  NA
  • Organism:  Procambarus clarkii (Red swamp crayfish)
  • Family:  FARP (FMRFamide related peptide) family
  • Source:  Animal
  • Expression:  NA
  • Disease:  NA
  • Comments:  NA
  • Taxonomy:  Procambarus (genus), Cambarinae (subfamily), Cambaridae (family), Astacoidea (superfamily), Astacidea (infraorder), Pleocyemata (suborder), Decapoda (order), Eucarida (superorder), Eumalacostraca (subclass), Malacostraca (class), Multicrustacea (superclass), Crustacea (subphylum), Pancrustacea, Mandibulata, Arthropoda (phylum), Panarthropoda, Ecdysozoa, 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:  DRNFLRF
  • Length:  7(1-7)
  • Propeptide:  DRNFLRF
  • Signal peptide:  NA
  • Modification:  T7 Phenylalanine amide
  • Glycosylation:  NA
  • Mutagenesis:  NA

Activity

  • Function:  Increases the rate and amplitude of spontaneous contractions of semi-isolated hearts. Increases the amplitude of excitatory postsynaptic potentials in abdominal extensor muscle.
  • 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)
    •    hor001769_AF2.pdbhor001769_ESM.pdb

Physical Information

Mass: 107429 Formula: C44H66N14O11
Absent amino acids: ACEGHIKMPQSTVWY Common amino acids: FR
pI: 10.4 Basic residues: 2
Polar residues: 1 Hydrophobic residues: 3
Hydrophobicity: -94.29 Boman Index: -3432
Half-Life: 1.1 hour Half-Life Yeast: 3 min
Half-Life E.Coli: >10 hour Aliphatic Index 55.71
Instability Index: 2147.14 Extinction Coefficient cystines: 0
Absorbance 280nm: 0

Literature

  • PubMed ID:  8387183
  • Title:  Isolation of two FMRFamide-related peptides from crayfish pericardial organs.