Cat. No. 1608
Alternative Name: cyclo(31-34)[D-Phe12,Nle21,38,Glu31, Lys34]Ac-hCRF (4-41)
Biological ActivityPotent and selective corticotropin releasing factor receptor-1 (CRF1) agonist (Ki values are 1.5 and 224 nM for CRF1 and CRF2 receptors respectively). Increases ACTH levels and increases faecal pellet output in vivo following i.p. administration.
Licensing InformationSold with the permission of the SALK Institute
(Modifications: Pro-1 = N-terminal Ac, X = Nle, Glu-28 = γ-Glu, Lys-31 = ε-Lys, Cyclized = Glu-28 - Lys-31, Ile-38 = C-terminal amide)
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.
Certificate of Analysis / Product Datasheet / Safety Data Sheet
Bruchas et al (2009) CRF1-R activation of the dynorphin/kappa opioid system in the mouse basolateral amygdala mediates anxiety-like behavior. PLoS One. 4 e8528. PMID: 20052275.
Rivier et al (2007) Stressin1-A, a potent corticotropin releasing factor receptor 1 (CRF1)-selective peptide agonist. J.Med.Chem. 50 1668. PMID: 17335188.
Rivier et al (2002) Receptor-selective corticotropin releasing factor analogs. Endocrin.Soc.Abstr. P2-50.
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Citations are publications that use Tocris products. Selected citations for Stressin I include:
Land et al (2008) The dysphoric component of stress is encoded by activation of the dynorphin kappa-opioid system. J Neurosci 28 407. PMID: 18184783.
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Keywords: Stressin I, supplier, CRF1, agonists, Corticotropin-Releasing, Factor1, Receptors, Factor, StressinI, Tocris Bioscience, CRF1 Receptor Agonist products