Biological Activity Endogenous substance P homolog that is a selective agonist at the tachykinin NK1 receptor (IC50 values are 1.8, 370 and 480 nM for NK1, NK3 and NK2 receptors respectively). Has proliferative and antiapoptotic actions on B-cells in vitro and is antihypertensive in vivo.
(Modifications: Met- 11= C-terminal amide)
Soluble to 0.70 mg/ml in water
Desiccate at -20°C
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