FAIRMol

Z19287096

Pose ID 12189 Compound 2499 Pose 668

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T18
T. brucei TR (Mepacrine binding site (MBS, site 1)) T. brucei Mepacrine binding site (MBS, site 1)
Ligand Z19287096
PDB6RB5

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
38.0 kcal/mol
Protein clashes
0
Internal clashes
14
Native overlap
contact recall 0.62, Jaccard 0.42
Burial
69%
Hydrophobic fit
73%
Reason: 14 internal clashes
14 intramolecular clashes 38% of hydrophobic surface appears solvent-exposed (9/24 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
EcoTox / ADMET GDS: SAFE UL GreenDrugScore ML model
ECOscore
0.282
aquatic tox · BCF · biodeg.
GDS₃ (3-block)
0.302
ADMET + ECO + DL
ADMETscore (GDS)
0.242
absorption · distr. · metab.
DLscore
0.420
drug-likeness
P(SAFE)
0.72
GDS classification
ADMET alerts (in-silico)
hERG High Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.609 kcal/mol/HA) ✓ Good fit quality (FQ -6.04) ✓ Good H-bonds (5 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ Very high strain energy (38.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-20.105
kcal/mol
LE
-0.609
kcal/mol/HA
Fit Quality
-6.04
FQ (Leeson)
HAC
33
heavy atoms
MW
462
Da
LogP
5.41
cLogP
Final rank
3.4344
rank score
Inter norm
-0.625
normalised
Contacts
14
H-bonds 8
Strain ΔE
38.0 kcal/mol
SASA buried
69%
Lipo contact
73% BSA apolar/total
SASA unbound
764 Ų
Apolar buried
385 Ų

Interaction summary

HBD 1 HBA 4 PC 1 HY 8 PI 2 CLASH 0

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PC · Polar contacts (possible, no H geometry)

HBD?/HBA? — heavy-atom distance only, H geometry unavailable. May be real H-bonds.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts13
PoseOpen native poseHB0
IFP residues
ASP116 GLU18 GLY112 ILE106 LEU17 MET113 SER109 THR117 THR335 TRP21 TYR110 VAL53 VAL58
Current overlap8Native recall0.62
Jaccard0.42RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

493 residues
Protein targetT18Atoms7550
Residues493Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:276; MET:221

Receptor context

1 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 1 Excluded HETATM 0
Kept cofactors / ions
A:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
654 1.173501566040526 -0.84665 -15.7661 1 21 0 0.00 - - no Open
666 2.4417895331946147 -0.605392 -12.9977 5 9 0 0.00 - - no Open
668 3.4343533377078903 -0.62467 -20.105 8 14 8 0.62 - - no Current

Molecular metrics

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

Scoring & efficiency

Docking score -20.105kcal/mol
Ligand efficiency (LE) -0.6092kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.045
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 461.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.41
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 38.03kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 56.44kcal/mol
Minimised FF energy 18.41kcal/mol

SASA & burial

✓ computed
SASA (unbound) 764.2Ų
Total solvent-accessible surface area of free ligand
BSA total 529.5Ų
Buried surface area upon binding
BSA apolar 384.7Ų
Hydrophobic contacts buried
BSA polar 144.7Ų
Polar contacts buried
Fraction buried 69.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3161.6Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1517.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)