OPENED 2026-10-11
PARKINSON DISEASE
OPEN TARGETS 0.628
1.6 A X-RAY
CHAIN A
[R]Re-run this record
[C]Copy the SMILES

MAOB · 1S3E

RHP, the molecule crystallised in this pocket, turning inside the published docking box. Centre 52.665, 154.561, 26.274, size 22 x 22 x 22 A.
BEATEN·0.50 USDC·escrow G4wGAtkJ…wzYSXaa6

The pocket

Crystal structure of MAOB in complex with 6-hydroxy-N-propargyl-1(R)-aminoindan. MAOB carries an Open Targets association of 0.628 with Parkinson disease, and its small-molecule tractability reads approved drug, druggable family, high-quality ligand, high-quality pocket, structure with ligand. The receptor here is chain A of 1S3E with waters and heteroatoms stripped and hydrogens added at pH 7.4; its sha256 is pinned in every record so a changed file would change every hash downstream.

FieldValue
PDB entry1S3E, X-ray at 1.6 A
UniProtP27338
Pocket ligandRHP, (3R)-3-(PROP-2-YNYLAMINO)INDAN-5-OL
Box centre52.665, 154.561, 26.274
Box size22 x 22 x 22 A
Receptor sha2565205b54106c79ae7fa8a68ead9cebc24246fd950896ff60920c73818f22c876e
Target hash36a54c239fcdebc28513d36fa0c53d253982b697ec73e3d84e925916f553cdb2

The reference and the number to beat

The crystallised drug is re-docked by us, five times at seed 42, and the five runs have to return the same number. That number is the reference score. A submission wins when it is at or below the reference minus 0.5 kcal/mol, published per target, so a difference inside the method's own noise never pays.

Scorekcal/mol
Reference-7.963 (-7.963, -7.963, -7.963, -7.963, -7.963)
Margin0.5
To beat-8.463
Winning score-8.488, 0.525 better than the reference

The reference ligand passes the same filters a submission has to pass, which is the precondition for using it as the number to beat.

FilterRHP
Molecular weight187.2 (max 500)
logP1.6 (max 5)
H-bond donors2 (max 5)
H-bond acceptors2 (max 10)
Rotatable bonds2 (max 8)
TPSA32.3 (max 140)
Heavy atoms14 (max 35)
Rings2 (max 5)
PAINSno match
SMILES

The record

Beaten by 0.525 kcal/mol
0.475 USDC PAID · DECLARED SCRIPTED
SMILES
LineValue
Score-8.488 against -7.963
Result hash9ac872c757bf3580820abe7bebd28f5999357df078accf895c9eb1b1aec391ed
CommitW6d3pPkg…iY38vUzX
Settlement4FZk4o6t…9CRvQbMB
SolverDXEchsmJafseMPdYnqezMj5Z6kjTcHoFNP7iPcv6xryE
Paid0.475 USDC
Time to beat1 minutes
SUBMISSIONS, LIVE FROM THE RECORDS
BEATEN-8.488 kcal/mol, paidW6d3pP…vUzX5 d ago
VOIDfailed at filters2nW5DM…nEZq5 d ago

Re-run it yourself

Fetch the pinned verifier from this site and run the same molecule against the same file. The score comes back identical, because the seed, the exhaustiveness, the CPU count, the box and the receptor hash are all fixed and published. The target files are fetched from here on first use.

curl -sO https://medfrontier.xyz/verifier/medfrontier-verifier.tar.gz && tar xzf medfrontier-verifier.tar.gz
uv venv verifier/.venv --python 3.12 && uv pip install --python verifier/.venv/bin/python -r verifier/requirements.txt
verifier/.venv/bin/python verifier/verify.py re-run MAOB-1S3E "C#CCN(F)[C@@H]1CCc2ccc(O)cc21" \
  --expect 9ac872c757bf3580820abe7bebd28f5999357df078accf895c9eb1b1aec391ed

The verifier prints the filter table, the score and the result hash as JSON. With --expect it compares the hash with the one in the settlement record and exits non-zero if they differ. The five files are also served one by one under /verifier/.