Potent and selective μ opioid receptor antagonist (IC50 = 3.5 nM). Displays > 1200-fold selectivity over δ opioid and somatostatin receptors. Brain penetrant and active in vivo.
(Modifications: Phe-1 = D-Phe, Trp-4 = D-Trp, X = Pen, Disulfide bridge between 2 - 7, Thr-8 = C-terminal amide)
|Storage||Desiccate at -20°C|
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.
|Solubility||Soluble to 1 mg/ml in water|
Preparing Stock Solutions
The following data is based on the product molecular weight 1104.32. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|1 mM||0.91 mL||4.53 mL||9.06 mL|
|5 mM||0.18 mL||0.91 mL||1.81 mL|
|10 mM||0.09 mL||0.45 mL||0.91 mL|
|50 mM||0.02 mL||0.09 mL||0.18 mL|
The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.
References are publications that support the products' biological activity.
Abbruscato et al (1997) Blood-brain barrier permeability and bioavailability of a highly potent and μ-selective opioid receptor antagonist, CTAP: comparison with morphine. J.Pharmacol.Exp.Ther. 280 402 PMID: 8996221
Kramer et al (1989) Novel peptidic mu opioid antagonists: pharmacologic characterization in vitro and in vivo. J.Pharmacol.Exp.Ther. 249 544 PMID: 2566679
Pelton et al (1986) Design and synthesis of conformationally constrained somatostatin analogues with high potency and specificity for μ opioid receptors. J.Med.Chem. 29 2370 PMID: 2878079
If you know of a relevant reference for CTAP, please let us know.
View Related Products by Product Action
Keywords: Selective potent μ-opioid mu-opioid antagonists MOP Receptors OP3 Mu Opioid Receptors
5 Citations for CTAP
Citations are publications that use Tocris products. Selected citations for CTAP include:
Gerhold et al (2015) Pronociceptive and Antinociceptive Effects of Buprenorphine in the Spinal Cord Dorsal Horn Cover a Dose Range of Four Orders of Magnitude. J Neurosci 35 9580 PMID: 26134641
Song et al (2011) Protein kinase Czeta mediates micro-opioid receptor-induced cross-desensitization of chemokine receptor CCR5. J Biol Chem 286 20354 PMID: 21454526
Krook-Magnuson et al (2011) Ivy and neurogliaform interneurons are a major target of μ-opioid receptor modulation. J Neurosci 31 14861 PMID: 22016519
Sengupta et al (2009) Morphine increases brain levels of ferritin heavy chain leading to inhibition of CXCR4-mediated survival signaling in neurons. J Leukoc Biol 29 2534 PMID: 19244528
Happel et al (2008) DAMGO-induced expression of chemokines and chemokine receptors: the role of TGF-β1. Front Cell Neurosci 83 956 PMID: 18252865
Do you know of a great paper that uses CTAP from Tocris? If so please let us know.
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