{
  "report_format_version": "pepfold-report-v1",
  "generated_at": "2026-06-19T00:33:06.334Z",
  "specimen": {
    "number": 307,
    "sequence": "VETYDVVAHLAFSGNSEAWKDLNWQYIAADNVQQAEGEVKIVIDEKDADDQEV",
    "sequence_length": 53,
    "status": "complete",
    "wallet": "6F4J6AdT5iQx4ExeN7JFE7EEM6fJ1XJ3DRUHT56gMfWF",
    "amount_sol": 0,
    "tx_hash": "oonR4Nii34RAVbSRQC3DtiXRNk8XTvKvaV7juTkrZWZgoZfZHcqEqxokHWGo2qjD8eLBxqAym5YgfhtfYSGwy78",
    "created_at": "2026-06-17T16:19:00.558379+00:00",
    "completed_at": "2026-06-17T16:32:07.814545+00:00"
  },
  "structure": {
    "pdb_url": "https://mrzziawbddodlpywncfy.supabase.co/storage/v1/object/public/pdb-files/193b877b-6da5-4717-a73e-adb7febea971.pdb",
    "helix_pct": 0,
    "sheet_pct": 0,
    "loop_pct": 100
  },
  "triage": {
    "models": {
      "fold_model": {
        "name": "ESMFold",
        "version": "esmatlas-esmfold-v1"
      },
      "triage_model": {
        "name": "PEPFOLD heuristic triage",
        "version": "pepfold-triage-v1"
      },
      "comment_model": {
        "name": "Claude",
        "version": "claude-opus-4-7"
      }
    },
    "run_id": "run_d1edf75c279149a288f4617684d2e33e",
    "metrics": [
      {
        "id": "fold_confidence",
        "label": "fold confidence",
        "value": 0.436,
        "source": {
          "model": "ESMFold",
          "version": "esmatlas-esmfold-v1"
        },
        "confidence": 0.52,
        "evidence_note": "derived from mean pLDDT on CA atoms",
        "confidence_band": [
          0.316,
          0.556
        ],
        "not_enough_confidence": true
      },
      {
        "id": "disorder_estimate",
        "label": "disorder estimate",
        "value": 1,
        "source": {
          "model": "PEPFOLD structure heuristic",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.52,
        "evidence_note": "estimated from loop proportion and low-confidence structure regions",
        "confidence_band": [
          0.88,
          1
        ],
        "not_enough_confidence": true
      },
      {
        "id": "aggregation_risk",
        "label": "aggregation risk",
        "value": 0.389,
        "source": {
          "model": "PEPFOLD developability heuristic",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.56,
        "evidence_note": "hydrophobic burden, aromatic burden, charge, and long hydrophobic runs",
        "confidence_band": [
          0.279,
          0.499
        ],
        "not_enough_confidence": false
      },
      {
        "id": "hydrophobic_burden",
        "label": "hydrophobic burden",
        "value": 0.453,
        "source": {
          "model": "PEPFOLD sequence analyzer",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.84,
        "evidence_note": "fraction of hydrophobic residues in sequence",
        "confidence_band": [
          0.413,
          0.493
        ],
        "not_enough_confidence": false
      },
      {
        "id": "charge_distribution_risk",
        "label": "charge distribution risk",
        "value": 0.189,
        "source": {
          "model": "PEPFOLD sequence analyzer",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.84,
        "evidence_note": "absolute net charge normalized by sequence length",
        "confidence_band": [
          0.149,
          0.229
        ],
        "not_enough_confidence": false
      },
      {
        "id": "solubility_risk",
        "label": "solubility risk",
        "value": 0.363,
        "source": {
          "model": "PEPFOLD developability heuristic",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.56,
        "evidence_note": "composite of aggregation risk, hydrophobic burden, and charge",
        "confidence_band": [
          0.253,
          0.473
        ],
        "not_enough_confidence": false
      },
      {
        "id": "developability_risk",
        "label": "developability risk",
        "value": 0.5,
        "source": {
          "model": "PEPFOLD developability heuristic",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.56,
        "evidence_note": "composite developability indicator used for triage",
        "confidence_band": [
          0.39,
          0.61
        ],
        "not_enough_confidence": false
      }
    ],
    "generated_at": "2026-06-17T16:30:47.785317+00:00",
    "report_version": "phase-a.v1",
    "sequence_length": 53,
    "synthesis_hints": [
      "sequence length >45 aa may reduce synthesis yield"
    ],
    "motif_liabilities": [],
    "developability_flags": [
      {
        "flag": "low_fold_confidence",
        "reason": "structure confidence is limited",
        "severity": "medium"
      },
      {
        "flag": "high_disorder_estimate",
        "reason": "predicted disorder is elevated",
        "severity": "medium"
      }
    ],
    "low_confidence_reasons": [
      "DSSP unavailable; secondary structure uses pLDDT fallback.",
      "Fold confidence below 0.45; treat structural metrics as directional."
    ]
  },
  "audit": {
    "input": {
      "sequence_length": 53,
      "sequence_sha256": "11bb3cde4220db411e07189a6241797ef3c0a80cae342fe3c7e3c2bb79372827"
    },
    "output": {
      "report_sha256": "0aaf53dbe2a9ed9130c7b9dd1a989bf7e280828f814a3eede84771ff69b18fea"
    },
    "run_id": "run_d1edf75c279149a288f4617684d2e33e",
    "timestamp": "2026-06-17T16:30:47.785414+00:00",
    "pipeline_versions": {
      "pep_model_version": "claude-opus-4-7",
      "fold_model_version": "esmatlas-esmfold-v1",
      "triage_model_version": "pepfold-triage-v1",
      "secondary_structure_source": "plddt_fallback"
    }
  },
  "attestation": null,
  "next_experiments": {
    "engine": "pepfold-recs-v1",
    "recommendations": [
      {
        "id": "cd_spectroscopy",
        "technique": "CD SPECTROSCOPY",
        "rationale": "experimental secondary structure check. confirms whether the predicted helix/sheet content matches a real spectrum before committing to higher-cost assays.",
        "evidence": "fold_confidence 44% (model is uncertain)",
        "turnaround_days": [
          1,
          3
        ],
        "tier": "biophysical_validation"
      },
      {
        "id": "nmr_hsqc",
        "technique": "1H-15N HSQC",
        "rationale": "if disorder is real, peaks will collapse into a narrow proton dispersion. if the peptide is actually folded, peaks will spread out. cheapest way to distinguish IDP from misfold.",
        "evidence": "disorder_estimate 100% (high)",
        "turnaround_days": [
          2,
          5
        ],
        "tier": "biophysical_validation"
      }
    ]
  },
  "comment": "53 residues of pure loop. no helix, no sheet, just a long floppy ribbon with nowhere to go. lots of charged residues near the tail, like it's trying to stay soluble while having no opinions about shape.",
  "tweet": {
    "id": "2067284163557007799",
    "url": "https://x.com/pepfoldagent/status/2067284163557007799"
  }
}