FAIRMol

OSA_Lib_133

Pose ID 11016 Compound 4770 Pose 173

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 OSA_Lib_133
PDB5S9T

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
36.8 kcal/mol
Protein clashes
0
Internal clashes
15
Native overlap
contact recall 0.92, Jaccard 0.61, H-bond role recall 1.00
Burial
78%
Hydrophobic fit
95%
Reason: 15 internal clashes
15 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.719 kcal/mol/HA) ✓ Good fit quality (FQ -7.14) ✓ Good H-bonds (3 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (95%) ✗ Very high strain energy (36.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-23.738
kcal/mol
LE
-0.719
kcal/mol/HA
Fit Quality
-7.14
FQ (Leeson)
HAC
33
heavy atoms
MW
448
Da
LogP
1.80
cLogP
Strain ΔE
36.8 kcal/mol
SASA buried
78%
Lipo contact
95% BSA apolar/total
SASA unbound
748 Ų
Apolar buried
553 Ų

Interaction summary

HB 3 HY 24 PI 2 CLASH 0
Final rank2.856Score-23.738
Inter norm-0.711Intra norm-0.009
Top1000noExcludedno
Contacts17H-bonds3
Artifact reasongeometry warning; 15 clashes; 1 protein clash; high strain Δ 36.8
Residues
ALA365 ARG228 ARG287 ARG331 ASP330 GLY196 GLY197 GLY229 GLY286 LEU227 LEU332 LEU334 MET333 PHE198 PHE230 SER364 VAL366

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 overlap11Native recall0.92
Jaccard0.61RMSD-
HB strict1Strict recall1.00
HB same residue+role1HB role recall1.00
HB same residue1HB residue recall1.00

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

No clash · clashes detected for this pose.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
173 2.855558732808564 -0.710771 -23.7377 3 17 11 0.92 1.00 - 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 -23.738kcal/mol
Ligand efficiency (LE) -0.7193kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.137
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 447.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.80
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 36.78kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 151.36kcal/mol
Minimised FF energy 114.58kcal/mol

SASA & burial

✓ computed
SASA (unbound) 748.1Ų
Total solvent-accessible surface area of free ligand
BSA total 583.6Ų
Buried surface area upon binding
BSA apolar 553.1Ų
Hydrophobic contacts buried
BSA polar 30.5Ų
Polar contacts buried
Fraction buried 78.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 94.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6728.2Ų
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 2052.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)