Catalog Number: 2138
Alternate Names: Xenopsin-related peptide 1, XP-1
Biological Activity
C-Terminal fragment of xenin, a neurotensin-like peptide; modulates pancreatic insulin and glucagon secretion/effects. Stimulates basal and arginine-induced insulin secretion and potentiates the insulin response to glucose (EC50 = 0.16 nM). Also potentiates arginine- and carbachol-induced glucagon secretion in a somatostatin-independent manner.
Technical Data
  • M.Wt:
  • Formula:
  • Sequence:
  • Solubility:
    Soluble to 1 mg/ml in water
  • Storage:
    Desiccate at -20°C
  • CAS No:
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. All Tocris products are intended for laboratory research use only.
Background References
  1. Xenopsin-related peptide generated in avian gastric extracts.
    Carraway et al.
    Regul.Pept., 1988;22:303
  2. Metabolism and potency of xenin and of its reduced hexapseudopeptide ψ fragment in dog.
    Feurle et al.
    Life Sci., 2003;74:697
  3. Stimulatory effect of xenin-8 on insulin and glucagon secretion in the perfused rat pancreas.
    Silvestre et al.
    Regul.Pept., 2003;115:25
Tocris Bioscience is the leading supplier of novel and exclusive tools for life science research with over 30 years' experience in the industry. Tocris is a Bio-Techne brand.

Order Details


Contact Information

Molarity Calculator
Calculate the mass, volume or concentration required for a solution

The molarity calculator is based on the following equation:

Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol)
An example of a molarity calculation using the molarity calculator:
What is the mass of compound required to make a 10 mM stock solution in 10 ml of water given that the molecular weight of the compound is 197.13 g/mol?

R&D Systems Guarantee

or select another batch:


Customer Information