FAIRMol

Z1889837352

Pose ID 11367 Compound 27 Pose 524

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand Z1889837352
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
47.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.58, Jaccard 0.29, H-bond role recall 0.00
Burial
72%
Hydrophobic fit
98%
Reason: strain 47.5 kcal/mol
strain ΔE 47.5 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.562 kcal/mol/HA) ✓ Good fit quality (FQ -5.71) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (98%) ✗ Extreme strain energy (47.5 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-20.240
kcal/mol
LE
-0.562
kcal/mol/HA
Fit Quality
-5.71
FQ (Leeson)
HAC
36
heavy atoms
MW
505
Da
LogP
-1.64
cLogP
Strain ΔE
47.5 kcal/mol
SASA buried
72%
Lipo contact
98% BSA apolar/total
SASA unbound
828 Ų
Apolar buried
578 Ų

Interaction summary

HB 6 HY 18 PI 1 CLASH 1
Final rank1.963Score-20.240
Inter norm-0.663Intra norm0.098
Top1000noExcludedno
Contacts19H-bonds6
Artifact reasongeometry warning; 6 clashes; 1 protein clash; high strain Δ 45.7
Residues
ARG228 ARG361 CYS375 GLY197 GLY229 GLY376 HIS359 HIS428 ILE378 LEU227 LEU332 LEU377 PHE198 PHE230 SER364 THR360 THR374 VAL362 VAL381

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap7Native recall0.58
Jaccard0.29RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
462 -0.2924236749244264 -0.897491 -30.3221 7 17 0 0.00 0.00 - no Open
529 0.2266800236437038 -0.763306 -24.8595 2 18 0 0.00 0.00 - no Open
535 0.510708423527471 -0.726438 -24.7716 3 17 0 0.00 0.00 - no Open
506 0.6125424365817946 -0.750888 -22.9192 4 18 0 0.00 0.00 - no Open
496 1.6838300499446746 -0.537129 -17.9266 4 11 0 0.00 0.00 - no Open
524 1.9630116217514917 -0.66271 -20.2398 6 19 7 0.58 0.00 - no Current
521 2.0654308346565085 -0.584516 -20.0515 3 14 0 0.00 0.00 - no Open
552 2.3810170928493584 -0.702076 -24.8734 6 16 0 0.00 0.00 - no Open

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -20.240kcal/mol
Ligand efficiency (LE) -0.5622kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.714
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 504.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) -1.64
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 47.48kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 141.35kcal/mol
Minimised FF energy 93.87kcal/mol

SASA & burial

✓ computed
SASA (unbound) 828.4Ų
Total solvent-accessible surface area of free ligand
BSA total 592.3Ų
Buried surface area upon binding
BSA apolar 577.8Ų
Hydrophobic contacts buried
BSA polar 14.5Ų
Polar contacts buried
Fraction buried 71.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 97.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6814.3Ų
SASA_nonpolar(complex) − SASA_nonpolar(receptor) − SASA_nonpolar(ligand free). Negative = non-polar surface buried upon binding. Requires full polarity-decomposed SASA computation.
Receptor non-polar SASA 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2056.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)