CTOP

CTOP is a peptide that acts as a μ-opioid receptor antagonist.

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CAT#R1808
Chemical Structure
CAS103429-31-8
Synonyms/AliasCTOP, (Tyr3,Orn5,Pen7)-Octreotate amide
M.F/FormulaC50H67N11O11S2
M.W/Mr.1062.26
SequenceOne Letter Code: FCYW{Orn}T{Pen}T-NH2 (Disulfide bridge:Cys2-Pen7)
Three Letter Code: Phe-Cys-Tyr-Trp-{Orn}-Thr-{Pen}-Thr-NH2 (Disulfide bridge:Cys2-Pen7)
Biological ActivityPotent and selective μ opioid receptor antagonist (Ki values are 0.96 and >10,000 nM for μ and δ receptors respectively). Causes behavioral effects on central administration in vivo. Also increases K+ currents in rat locus ceruleus neurons in vitro via a μ receptor independent mechanism.
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