Tuftsin

Tuftsin
Names
IUPAC name
L-threonyl-L-lysyl-L-prolyl-L-arginine
Identifiers
3D model (JSmol)
ChemSpider
MeSH Tuftsin
UNII
  • InChI=1S/C21H40N8O6/c1-12(30)16(23)18(32)27-13(6-2-3-9-22)19(33)29-11-5-8-15(29)17(31)28-14(20(34)35)7-4-10-26-21(24)25/h12-16,30H,2-11,22-23H2,1H3,(H,27,32)(H,28,31)(H,34,35)(H4,24,25,26)/t12-,13+,14+,15+,16+/m1/s1 ☒N
    Key: IESDGNYHXIOKRW-YXMSTPNBSA-N ☒N
  • O=C(N[C@@H](CCCNC(N)=N)C(O)=O)[C@@H]1CCCN1C(=O)[C@H](CCCCN)NC(=O)[C@@H](N)[C@@H](C)O
Properties
C21H40N8O6
Molar mass 500.593 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tuftsin is a tetrapeptide (Thr-Lys-Pro-Arg, TKPR) located in the Fc-domain of the heavy chain of immunoglobulin G (residues 289-292). It has an immunostimulatory effect. It is named for Tufts University where it was first discovered in 1983.[1]

  1. ^ Najjar, V.A. Tuftsin, a natural activator of phagocyte cells: an overview. Ann. New York Acad. Sci. 1–11 (1983)