{
  "report_format_version": "pepfold-report-v1",
  "generated_at": "2026-06-19T00:34:16.826Z",
  "specimen": {
    "number": 327,
    "sequence": "ANALDLNQSNCATIIDLKHPEGLNAGRDLLC",
    "sequence_length": 31,
    "status": "complete",
    "wallet": "5DxbY9hNoqrDgZLpCLkmyrJyRK9GtpGXVgUBv8hnQnx7",
    "amount_sol": 0,
    "tx_hash": "2moABL1L5Nk4TjQNMjiGcoFhEHuUf46qroMnbFvoNc29z1i5P3t4fAdJQPzQ3wNtSCgR2gZzRnkSeVu4p2RMrPnM",
    "created_at": "2026-06-17T17:23:10.127637+00:00",
    "completed_at": "2026-06-17T17:27:59.138709+00:00"
  },
  "structure": {
    "pdb_url": "https://mrzziawbddodlpywncfy.supabase.co/storage/v1/object/public/pdb-files/9c201100-7339-4a11-bd66-86ea28523746.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_e954295a99cc4540ab735f58b72f1c6c",
    "metrics": [
      {
        "id": "fold_confidence",
        "label": "fold confidence",
        "value": 0.505,
        "source": {
          "model": "ESMFold",
          "version": "esmatlas-esmfold-v1"
        },
        "confidence": 0.52,
        "evidence_note": "derived from mean pLDDT on CA atoms",
        "confidence_band": [
          0.385,
          0.625
        ],
        "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": 0.319,
        "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": [
          0.209,
          0.429
        ],
        "not_enough_confidence": false
      },
      {
        "id": "hydrophobic_burden",
        "label": "hydrophobic burden",
        "value": 0.387,
        "source": {
          "model": "PEPFOLD sequence analyzer",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.84,
        "evidence_note": "fraction of hydrophobic residues in sequence",
        "confidence_band": [
          0.347,
          0.427
        ],
        "not_enough_confidence": false
      },
      {
        "id": "charge_distribution_risk",
        "label": "charge distribution risk",
        "value": 0.065,
        "source": {
          "model": "PEPFOLD sequence analyzer",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.84,
        "evidence_note": "absolute net charge normalized by sequence length",
        "confidence_band": [
          0.025,
          0.105
        ],
        "not_enough_confidence": false
      },
      {
        "id": "solubility_risk",
        "label": "solubility risk",
        "value": 0.283,
        "source": {
          "model": "PEPFOLD developability heuristic",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.56,
        "evidence_note": "composite of aggregation risk, hydrophobic burden, and charge",
        "confidence_band": [
          0.173,
          0.393
        ],
        "not_enough_confidence": false
      },
      {
        "id": "developability_risk",
        "label": "developability risk",
        "value": 0.439,
        "source": {
          "model": "PEPFOLD developability heuristic",
          "version": "pepfold-triage-v1"
        },
        "confidence": 0.56,
        "evidence_note": "composite developability indicator used for triage",
        "confidence_band": [
          0.329,
          0.549
        ],
        "not_enough_confidence": false
      }
    ],
    "generated_at": "2026-06-17T17:26:38.790587+00:00",
    "report_version": "phase-a.v1",
    "sequence_length": 31,
    "synthesis_hints": [],
    "motif_liabilities": [
      "multiple cysteines; disulfide heterogeneity risk"
    ],
    "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."
    ]
  },
  "audit": {
    "input": {
      "sequence_length": 31,
      "sequence_sha256": "809002ab3877b57e99b2da11064ed5b4d56b72233bb9ef6826cb9e70ca20b208"
    },
    "output": {
      "report_sha256": "8b151605a8de33204d32663c360a00e38ac6b94eac6ae0cb89276c46ce742d0f"
    },
    "run_id": "run_e954295a99cc4540ab735f58b72f1c6c",
    "timestamp": "2026-06-17T17:26:38.790677+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": "liability_redesign",
        "technique": "LIABILITY REDESIGN ROUND",
        "rationale": "redesign to remove the flagged motif(s) before going wet-lab: multiple cysteines; disulfide heterogeneity risk. minimal substitutions usually suffice (e.g. N→Q for deamidation hotspots, M→L for met oxidation).",
        "evidence": "1 motif liability flag(s) in the sequence",
        "turnaround_days": [
          0,
          1
        ],
        "tier": "in_silico_only"
      },
      {
        "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 51% (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": "all loop, no commitment. 31 residues of pure floppiness, not a single turn that wants to stick. two cysteines floating around with no disulfide partner in sight, which is honestly a little sad.",
  "tweet": {
    "id": "2067298220204872064",
    "url": "https://x.com/pepfoldagent/status/2067298220204872064"
  }
}