ArticleChemistry & biology2015
Single Amino Acid Variation Underlies Species-Specific Sensitivity to Amphibian Skin-Derived Opioid-like Peptides.
Article in Chemistry & biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed, 14 citations in OpenAlex.
- Mechanistic insights into the therapeutic properties of delta opioid receptor.Science advances · 2026Article
- The Neurotropic Activity of Novel Dermorphin Analogs Active at Systemic and Noninvasive Administration.International journal of molecular sciences · 2025Article
- Functional Characterization of Sodium Channel Inhibitors at the Delta-Opioid Receptor.ACS omega · 2022Article
- Cyclizing Painkillers: Development of Backbone-Cyclic TAPS Analogs.Frontiers in chemistry · 2020Article
- Leveraging Large-scale Behavioral Profiling in Zebrafish to Explore Neuroactive Polypharmacology.ACS chemical biology · 2016Article
- New Technologies for Elucidating Opioid Receptor Function.Trends in pharmacological sciences · 2016Review
Corrections and comments
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Authors and funding
11 authors at 5 institutions in 1 country.
Funding
Abstract
It has been suggested that the evolution of vertebrate opioid receptors (ORs) follow a vector of increased functionality. Here, we test this idea by comparing human and frog ORs. Interestingly, some of the most potent opioid peptides known have been isolated from amphibian skin secretions. Here we show that such peptides (dermorphin and deltorphin) are highly potent in the human receptors and inactive in frog ORs. The molecular basis for the insensitivity of the frog ORs to these peptides was studied using chimeras and molecular modeling. The insensitivity of the delta OR (DOR) to deltorphin was due to variation of a single amino acid, Trp7.35, which is a leucine in mammalian DORs. Notably, Trp7.35 is completely conserved in all known DOR sequences from lamprey, fish, and amphibians. The deltorphin-insensitive phenotype was verified in fish. Our results provide a molecular explanation for the species selectivity of skin-derived opioid peptides.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.