General Information

  • ID:  hor002206
  • Uniprot ID:  Q90WW4
  • Protein name:  Insulin-like growth factor II-A
  • Gene name:  igf2-a
  • Organism:  Xenopus laevis (African clawed frog)
  • Family:  Insulin family
  • Source:  Animal
  • Expression:  Expressed both maternally and zygotically. Expressed in the dorsal midline during gastrulation and neurulation.
  • Disease:  NA
  • Comments:  NA
  • Taxonomy:  Xenopus (subgenus), Xenopus (genus), Xenopodinae (subfamily), Pipidae (family), Pipoidea (superfamily), Anura (order), Batrachia (superorder), Amphibia (class), 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:0005178 integrin binding; GO:0005179 hormone activity; GO:0008083 growth factor activity
  • GO BP:  GO:0007165 signal transduction; GO:0007399 nervous system development; GO:0008284 positive regulation of cell population proliferation; GO:0030154 cell differentiation; GO:0060323 head morphogenesis
  • GO CC:  GO:0005576 extracellular region; GO:0005615 extracellular space

Sequence Information

  • Sequence:  YRATETLCGGELVDTLQFVCGDRGFYFSTNNGRSNRRPNRGIVDVCCFKSCDLELLETYCAKPTKNE
  • Length:  67(57-123)
  • Propeptide:  MEQLSCKHRSSSVEAEAQLCRQTESRSTQLPRMSVMRHLFLLSITFLVYTLDSAKAYRATETLCGGELVDTLQFVCGDRGFYFSTNNGRSNRRPNRGIVDVCCFKSCDLELLETYCAKPTKNERDVSTAPATAIPPLSKQDLYHKHHHTKSSKYDIWQRKSIHRLRRGVPAIVRARQYRLLMEKAEEAEQALSHRPLTTLPITRPLRLQQASEPSHN
  • Signal peptide:  MEQLSCKHRSSSVEAEAQLCRQTESRSTQLPRMSVMRHLFLLSITFLVYTLDSAKA
  • Modification:  NA
  • Glycosylation:  NA
  • Mutagenesis:  NA

Activity

  • Function:  The insulin-like growth factors, isolated from plasma, are structurally and functionally related to insulin but have a much higher growth-promoting activity. Promotes anterior neural development
  • Mechanism:  NA
  • Cross BBB:  NA
  • Target:  NA
  • Target Unid:  NA
  • IC50: NA
  • EC50: NA
  • ED50: NA
  • kd: NA
  • Half life: NA

Structure

  • Disulfide bond:  8-47; 20-60; 46-51
  • Structure ID:  AF-Q90WW4-F1(AlphaFold_DB_ID)
  • 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)
  •    hor002206_AF2.pdbhor002206_ESM.pdb

Physical Information

Mass: 875393 Formula: C324H508N94O104S6
Absent amino acids: HMW Common amino acids: CGLRTEN
pI: 6.33 Basic residues: 9
Polar residues: 29 Hydrophobic residues: 17
Hydrophobicity: -49.85 Boman Index: -16042
Half-Life: 2.8 hour Half-Life Yeast: 10 min
Half-Life E.Coli: 2 min Aliphatic Index 61.04
Instability Index: 2446.72 Extinction Coefficient cystines: 4845
Absorbance 280nm: 73.41

Literature

  • PubMed ID:  11709186
  • Title:  Neural and Head Induction by Insulin-Like Growth Factor Signals