{ "items" : [
    { "id" : "http://dbpedia.org/resource/Opioid_receptor"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Opioid receptors are a group of inhibitory G protein-coupled receptors with opioids as ligands. The endogenous opioids are dynorphins, enkephalins, endorphins, endomorphins and nociceptin. The opioid receptors are ~40% identical to somatostatin receptors (SSTRs). Opioid receptors are distributed widely in the brain, and are found in the spinal cord and digestive tract."] } } }
