Physalaemin

Physalaemin
Names
Other names
H-Pyr-Ala-Asp-Pro-Asn-Lys-Phe-Tyr-Gly-Leu-Met-NH2
Identifiers
3D model (JSmol)
ChEMBL
MeSH Physalaemin
UNII
  • C[C@@H](C(=O)N[C@@H](CC(=O)O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(=O)N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC2=CC=CC=C2)C(=O)N[C@@H](CC3=CC=C(C=C3)O)C(=O)NCC(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCSC)C(=O)N)NC(=O)[C@@H]4CCC(=O)N4
Properties
C58H84N14O16S
Molar mass 1265.45 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Physalaemin is a tachykinin peptide obtained from the Physalaemus frog, closely related to substance P. Its structure was first elucidated in 1964.[1][2]

Like all tachykinins, physalaemin is a sialagogue (increases salivation) and a potent vasodilator with hypotensive effects.[3]

  1. ^ Erspaemer V, Anastasi A, Bertaccini G, Cei JM (1964). "Structure and pharmacological actions of physalaemin, the main active polypeptide of the skin of Physalaemus fuscumaculatus". Experientia. 20 (9): 489–90. doi:10.1007/BF02154064. PMID 5857249. S2CID 25448266.
  2. ^ Anastasi A, Erspamer V, Cei JM (1964). "Isolation and amino acid sequence of physalaemin, the main active polypeptide of the skin of Physalaemus fuscumaculatus". Arch Biochem Biophys. 108 (2): 341–8. doi:10.1016/0003-9861(64)90395-9. PMID 14240587.
  3. ^ Severini C, Improta G, Falconieri-Erspamer G, Salvadori S, Erspamer V (2002). "The tachykinin peptide family". Pharmacol Rev. 54 (2): 285–322. doi:10.1124/pr.54.2.285. PMID 12037144. S2CID 85570180.