... some participant in an interaction...
{
  "id": "12",
  "interactorRef": "uniprotkb_P39079",
  "stoichiometry": "2",
  "bioRole": {
    "id": "MI:0499",
    "name": "unspecified role"
  },
  "features:" [
    {
      classification: "binding site",
      "id": "4",
      "name": "cct2 binding site",
      "type": {
        "id": "MI:0117",
        "name": "binding-associated region"
      },
      "sequenceData": [
        {
          "pos": "?-?",
          "interactorRef": "uniprotkb_P39079",
          "participantRef": "12"
        }
      ],
      "linkedFeatures": [
        "3"
      ]
    },
    {
      classification: "other",
      "id": "5",
      "name": "cct2 binding site",
      "type": {
        "id": "MI:0117",
        "name": "binding-associated region"
      },
      "sequenceData": [
        {
          "pos": "?-?",
          "interactorRef": "uniprotkb_P39079",
          "participantRef": "12"
        }
      ],
      "linkedFeatures": [
        "3"
      ]
    },
  ]
}