{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T11:57:56Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 18.2,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09579-ea38-7502-8bba-53fd50b78f9f\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: pederin\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 044: 1001 registe",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 86.5,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09579-ea3a-70b2-9540-60e05ddbf653\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: pederin\nRegistry id: vr.tr.pederin\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext "
      }
    }
  },
  "metaModel": {
    "id": "THING-Q8214251",
    "registryId": "vr.tr.pederin",
    "name": "pederin",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q8214251/",
  "model": {
    "registry_id": "vr.tr.pederin",
    "name": "pederin",
    "purpose": "Enable an agent to recognize pederin, assess the identity and condition of material containing it, and determine whether evidence supports a proposed analytical or research use.",
    "definition": "Pederin is a highly potent, nitrogen-containing polyketide toxin produced by bacterial symbionts of certain Paederus rove beetles that inhibits protein synthesis and causes blistering skin injury.",
    "scope_statement": "This model owns pederin as the chemical substance registered as vr.tr.pederin in PHY.MAT, including its molecular identity, sample quality, biological provenance, measured activity and handling constraints.",
    "in_scope": [
      "Molecular connectivity, stereochemistry and verified chemical identifiers",
      "Pederin content, purity and differentiation from related compounds",
      "Material form, solution composition and stability evidence",
      "Relations to biological carriers and proposed microbial producers",
      "Assay-specific biological effects and evidence governing handling"
    ],
    "out_of_scope": [
      "Taxonomy and complete life histories of Paederus beetles",
      "Complete genomes and physiology of associated bacteria",
      "Other members of the pederin family as independent substances",
      "Diagnosis and treatment of Paederus-associated dermatitis",
      "Detailed extraction, synthesis or production protocols",
      "Drug formulations and clinical development programmes"
    ],
    "distinguishing_features": [
      "Require agreement with a stereochemically explicit pederin reference structure; a family name or matching molecular formula alone does not establish identity.",
      "Distinguish pederin from related compounds such as onnamides through full structural comparison. Related compounds are illustrated in [Piel's biosynthesis study](https://pubmed.ncbi.nlm.nih.gov/12381784/).",
      "Require analytical identification of pederin within a beetle extract; biological origin alone does not establish the identity or purity of its constituents.",
      "Distinguish chemical detection from biosynthetic capability: pederin can occur through transfer to offspring, so its presence does not independently establish production. See [Piel's study, Figure 2](https://pubmed.ncbi.nlm.nih.gov/12381784/)."
    ],
    "characteristics": [
      {
        "name": "Stereochemical identity",
        "kind": "category",
        "unit_or_values": "Stereochemically explicit structure, isomeric SMILES and InChI; verified or unresolved",
        "why_it_matters": "Separates pederin from stereoisomers and structurally related metabolites."
      },
      {
        "name": "Chemical identifier concordance",
        "kind": "relation",
        "unit_or_values": "CAS number, PubChem CID and EC number where verified, each linked to its source and structure",
        "why_it_matters": "Prevents a synonym or supplier record from silently identifying a different substance."
      },
      {
        "name": "Pederin content",
        "kind": "measurement",
        "unit_or_values": "Mass fraction %, mg/g or mol/L, with matrix, method and uncertainty",
        "why_it_matters": "Distinguishes the amount of pederin from total extract mass or nominal solution strength."
      },
      {
        "name": "Related-compound profile",
        "kind": "measurement",
        "unit_or_values": "Identified components and quantified fractions; unresolved chromatographic peaks",
        "why_it_matters": "Supports attribution of analytical signals and biological effects to pederin."
      },
      {
        "name": "Material condition",
        "kind": "state",
        "unit_or_values": "Isolated material, solution or matrix-associated analyte; solvent, temperature and observed degradation",
        "why_it_matters": "Determines whether measurements and intended uses remain comparable."
      },
      {
        "name": "Physical-property evidence",
        "kind": "measurement",
        "unit_or_values": "Solubility in mg/mL; melting or decomposition temperature in °C; boiling point only if supported at stated pressure",
        "why_it_matters": "Supports material assessment without substituting predictions for measurements."
      },
      {
        "name": "Biological provenance",
        "kind": "relation",
        "unit_or_values": "Host specimen, associated microorganism, collection record and strength of producer attribution",
        "why_it_matters": "Separates the organism carrying pederin from evidence identifying its producer."
      },
      {
        "name": "Biological activity",
        "kind": "measurement",
        "unit_or_values": "Endpoint-specific response or IC50 in mol/L, with assay system, exposure duration and controls",
        "why_it_matters": "Prevents potency claims from being transferred between incompatible assays."
      },
      {
        "name": "Hazard and regulatory evidence",
        "kind": "category",
        "unit_or_values": "Verified classification, jurisdiction, source date and exposure-limit status; unknown where unestablished",
        "why_it_matters": "Supports handling decisions without treating missing classifications as evidence of safety."
      }
    ],
    "affordances": [
      "Reconcile a claimed pederin identity against structural and analytical evidence.",
      "Compare pederin lots or extracts after accounting for purity, concentration and matrix.",
      "Trace material to a biological source while distinguishing carriage from production.",
      "Assess whether storage history and stability evidence support continued use.",
      "Compare biological activity only across explicitly compatible assay conditions.",
      "Determine whether a proposed use has adequate identity, hazard and authorization evidence."
    ],
    "what_it_is_for": [
      "Pederin is encountered in research on natural toxins, bacterial symbiosis and certain rove beetles.",
      "It is studied for its effects on protein synthesis and its role in blistering skin injury following exposure to beetle fluids."
    ],
    "standards_and_regulation": [
      "The Globally Harmonized System of Classification and Labelling of Chemicals issued by the United Nations provides the framework for communicating pederin hazards through applicable national implementations."
    ],
    "failure_modes_and_hazards": [
      "Skin exposure can cause severe irritation and blistering injury.",
      "Transfer to the eyes can cause serious ocular injury.",
      "Unrecognized contamination can expose handlers and compromise laboratory materials."
    ],
    "facets_not_applicable": {
      "recognition": "Visual identification is not applicable because pederin has no reliable visible features that distinguish it from other chemical substances."
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q8214251: pederin",
      "url": "https://www.wikidata.org/wiki/Q8214251",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Pederin",
      "url": "https://en.wikipedia.org/wiki/Pederin",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "pederin-identity",
        "name": "Pederin identity",
        "description": "Establish the exact chemical entity represented by the registry name.",
        "rationale": "Pederin must be distinguishable from a family label, a related metabolite and an incompletely characterized extract.",
        "layers": [
          {
            "id": "molecular-definition",
            "name": "Molecular definition",
            "description": "Define pederin through connectivity and stereochemistry.",
            "findings": [
              {
                "id": "reference-structure",
                "name": "Reference structure",
                "description": "Require a traceable reference structure and record any unresolved stereochemical assignment.",
                "questions": [
                  {
                    "text": "Which experimentally supported structure defines pederin, including all assigned stereocentres?",
                    "kind": "definition",
                    "id": "reference-structure-q01"
                  },
                  {
                    "text": "Which structural observations distinguish the sample from pederin stereoisomers and related metabolites?",
                    "kind": "measurement",
                    "id": "reference-structure-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "identifier-boundaries",
            "name": "Identifier boundaries",
            "description": "Reconcile registry, chemical database and literature names.",
            "findings": [
              {
                "id": "identifier-concordance",
                "name": "Identifier concordance",
                "description": "Accept identifiers only when their underlying structures refer to the same pederin entity.",
                "questions": [
                  {
                    "text": "Which CAS number, PubChem CID and EC number, if any, are verified against the reference structure?",
                    "kind": "provenance",
                    "id": "identifier-concordance-q01"
                  },
                  {
                    "text": "Does each occurrence of 'pederin' denote the individual compound, a compound family or a material containing it?",
                    "kind": "boundary",
                    "id": "identifier-concordance-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "pederin-material-quality",
        "name": "Pederin material quality",
        "description": "Characterize the actual material in which pederin is measured or used.",
        "rationale": "Extract composition and uncertain content can invalidate identity, potency and exposure comparisons.",
        "layers": [
          {
            "id": "content-and-selectivity",
            "name": "Content and selectivity",
            "description": "Assess pederin quantity separately from related compounds and matrix components.",
            "findings": [
              {
                "id": "quantified-pederin",
                "name": "Quantified pederin",
                "description": "Record selective quantification, reference-standard provenance and unresolved interferences.",
                "questions": [
                  {
                    "text": "What pederin concentration or mass fraction was measured, with what calibration and uncertainty?",
                    "kind": "measurement",
                    "id": "quantified-pederin-q01"
                  },
                  {
                    "text": "Does the analytical method resolve pederin from related metabolites and matrix interferences?",
                    "kind": "measurement",
                    "id": "quantified-pederin-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "physical-state-and-stability",
            "name": "Physical state and stability",
            "description": "Connect physical-property observations to the specific pederin material and its history.",
            "findings": [
              {
                "id": "usable-material-state",
                "name": "Usable material state",
                "description": "Track solvent, physical state and evidence of degradation without assuming universal storage conditions.",
                "questions": [
                  {
                    "text": "Which solubility and thermal measurements apply to this form and purity of pederin, under what conditions?",
                    "kind": "measurement",
                    "id": "usable-material-state-q01"
                  },
                  {
                    "text": "What stability evidence supports continued use after the recorded storage and handling history?",
                    "kind": "action",
                    "id": "usable-material-state-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "pederin-biological-provenance",
        "name": "Pederin biological provenance",
        "description": "Separate the material's biological source from evidence about its biosynthetic producer.",
        "rationale": "Research links pederin biosynthesis to a bacterial gene cluster associated with Paederus beetles; host and producer therefore require separate relations. See [Piel's primary study](https://pubmed.ncbi.nlm.nih.gov/12381784/).",
        "layers": [
          {
            "id": "carrier-and-sample",
            "name": "Carrier and sample",
            "description": "Connect detected pederin to a documented specimen and sampled matrix.",
            "findings": [
              {
                "id": "sample-origin",
                "name": "Sample origin",
                "description": "Require specimen-level provenance rather than assuming all beetles of a named group contain equivalent material.",
                "questions": [
                  {
                    "text": "Which specimen, species identification and sampled biological matrix support this pederin record?",
                    "kind": "provenance",
                    "id": "sample-origin-q01"
                  },
                  {
                    "text": "Was pederin directly detected in that sample, and what result supports the reported amount?",
                    "kind": "measurement",
                    "id": "sample-origin-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "producer-attribution",
            "name": "Producer attribution",
            "description": "Evaluate chemical, genetic and experimental evidence for biosynthesis.",
            "findings": [
              {
                "id": "production-versus-carriage",
                "name": "Production versus carriage",
                "description": "Distinguish metabolite presence, pathway association and demonstrated biosynthetic activity.",
                "questions": [
                  {
                    "text": "What evidence links the pederin in this record to an associated microorganism or a ped biosynthetic gene cluster?",
                    "kind": "provenance",
                    "id": "production-versus-carriage-q01"
                  },
                  {
                    "text": "Does the evidence establish production, or only carriage, transfer or genetic potential?",
                    "kind": "boundary",
                    "id": "production-versus-carriage-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "pederin-biological-effects",
        "name": "Pederin biological effects",
        "description": "Organize evidence for molecular effects and observed biological responses.",
        "rationale": "An activity claim requires both a defined pederin preparation and a defined experimental endpoint.",
        "layers": [
          {
            "id": "mechanistic-attribution",
            "name": "Mechanistic attribution",
            "description": "Evaluate proposed effects on protein synthesis separately from downstream cellular outcomes.",
            "findings": [
              {
                "id": "mechanism-evidence",
                "name": "Mechanism evidence",
                "description": "Require direct evidence before assigning a molecular mechanism to pederin in a particular system.",
                "questions": [
                  {
                    "text": "Which experiments directly test pederin's effects on translation, and which measure only downstream cell responses?",
                    "kind": "provenance",
                    "id": "mechanism-evidence-q01"
                  },
                  {
                    "text": "Was the tested material confirmed as pederin rather than an analogue or mixed extract?",
                    "kind": "boundary",
                    "id": "mechanism-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "response-and-interpretation",
            "name": "Response and interpretation",
            "description": "Keep potency, cytotoxicity and proposed therapeutic relevance tied to their experimental context.",
            "findings": [
              {
                "id": "assay-qualified-response",
                "name": "Assay-qualified response",
                "description": "Record biological system, endpoint, exposure duration and controls before comparing activity.",
                "questions": [
                  {
                    "text": "What concentration-response relationship was observed for the specified endpoint, duration and biological system?",
                    "kind": "measurement",
                    "id": "assay-qualified-response-q01"
                  },
                  {
                    "text": "What evidence permits extending this result beyond the tested system to a proposed research or therapeutic use?",
                    "kind": "action",
                    "id": "assay-qualified-response-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "pederin-exposure-and-use",
        "name": "Pederin exposure and use",
        "description": "Connect material-specific hazard evidence to proposed handling and use.",
        "rationale": "An agent needs an evidence-based decision for the actual pederin preparation, with uncertainty explicitly retained.",
        "layers": [
          {
            "id": "exposure-evidence",
            "name": "Exposure evidence",
            "description": "Separate evidence for purified pederin from evidence involving beetle material or mixtures.",
            "findings": [
              {
                "id": "route-and-material",
                "name": "Route and material",
                "description": "Associate each adverse-effect observation with its exposure route, material identity and attribution limits.",
                "questions": [
                  {
                    "text": "Which adverse-effect observations concern identified pederin, and which concern beetle fluids or mixed extracts?",
                    "kind": "boundary",
                    "id": "route-and-material-q01"
                  },
                  {
                    "text": "What exposure route, amount and observation period support each reported effect?",
                    "kind": "measurement",
                    "id": "route-and-material-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "handling-decision",
            "name": "Handling decision",
            "description": "Assess applicable classifications and evidence supporting a proposed operation.",
            "findings": [
              {
                "id": "use-constraints",
                "name": "Use constraints",
                "description": "Record authoritative requirements and validated controls without inventing exposure limits or decontamination claims.",
                "questions": [
                  {
                    "text": "Which current classifications, exposure limits or other restrictions are verified for pederin in the relevant jurisdiction?",
                    "kind": "provenance",
                    "id": "use-constraints-q01"
                  },
                  {
                    "text": "What documented controls and disposal or decontamination evidence support the proposed handling of this preparation?",
                    "kind": "action",
                    "id": "use-constraints-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evidence-and-external-alignment",
        "name": "Evidence and external alignment",
        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
        "layers": [
          {
            "id": "reported-evidence",
            "name": "Reported evidence",
            "description": "Findings from the breadth pass, kept separate from the structural claims.",
            "findings": [
              {
                "id": "evidence-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "This description is based on recall; no sources were consulted.",
                  "Exact registry identifiers, physical constants, exposure limits and jurisdiction-specific classifications require verification.",
                  "Toxin occurrence and bacterial production should be checked at the beetle species and population level rather than assumed for every Paederus beetle."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-identifiers",
                "name": "Identifiers and schemes",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "scheme": "Molecular formula",
                    "value_or_pattern": "C25H45NO9",
                    "note": "Describes elemental composition but does not uniquely specify structure or stereochemistry."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-real-world-use",
                "name": "Real-world use",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Chemical defence in certain Paederus beetles.",
                  "Research on protein synthesis inhibition and cytotoxic natural products.",
                  "A target for research in complex natural-product synthesis."
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-measurements",
                "name": "Typical measurements",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "quantity": "Molar mass",
                    "typical_range": "Approximately 503.63",
                    "unit": "g/mol"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-failure-modes-and-hazards",
                "name": "Failure modes and hazards",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Contact with toxin-containing beetle body fluids can cause Paederus dermatitis, commonly after a beetle is crushed against skin.",
                  "Skin injury can develop after a delay, with redness and blistering.",
                  "Transfer to the eyes can cause significant ocular irritation and injury.",
                  "Potent cytotoxicity makes uncontrolled exposure hazardous."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Natural exposure depends on the local occurrence and abundance of toxin-bearing Paederus beetles."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-neighbours",
                "name": "Neighbouring kinds and how to tell them apart",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "name": "Cantharidin",
                    "difference": "Cantharidin is a chemically distinct terpenoid blistering agent associated with blister beetles; pederin is a nitrogen-containing polyketide associated with certain rove beetles."
                  },
                  {
                    "name": "Paederus dermatitis",
                    "difference": "Paederus dermatitis is the skin condition caused by exposure; pederin is the causative chemical toxin."
                  },
                  {
                    "name": "Paederus",
                    "difference": "Paederus is a beetle genus; pederin is a chemical carried by some of its members."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of pederin this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Which authoritative structure record reconciles pederin's stereochemistry, synonyms, CAS number, PubChem CID and any EC number?",
    "Which physical constants and storage conditions have experimental support for chemically characterized pederin rather than predictions or unspecified extracts?",
    "Which analytical methods and reference materials reliably distinguish pederin from related metabolites and degradation products?",
    "How far does producer attribution extend across host species and specimens, and where is it supported only by pathway association?",
    "Which current hazard classifications, exposure limits and validated decontamination methods apply specifically to pederin?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 17,
    "questions": 27
  }
}
