FAIRMol

OSA_Lib_28

Pose ID 11004 Compound 4719 Pose 161

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_28
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
19.4 kcal/mol
Protein clashes
0
Internal clashes
19
Native overlap
contact recall 0.83, Jaccard 0.50, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
99%
Reason: 19 internal clashes
19 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.732 kcal/mol/HA) ✓ Good fit quality (FQ -7.20) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (99%) ✗ Moderate strain (19.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (19)
Score
-23.421
kcal/mol
LE
-0.732
kcal/mol/HA
Fit Quality
-7.20
FQ (Leeson)
HAC
32
heavy atoms
MW
422
Da
LogP
4.90
cLogP
Strain ΔE
19.4 kcal/mol
SASA buried
80%
Lipo contact
99% BSA apolar/total
SASA unbound
685 Ų
Apolar buried
539 Ų

Interaction summary

HB 1 HY 24 PI 2 CLASH 0

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.
Final rank1.495Score-23.421
Inter norm-0.764Intra norm0.032
Top1000noExcludedno
Contacts18H-bonds1
Artifact reasongeometry warning; 19 clashes; 1 protein contact clash
Residues
ALA284 ALA365 ARG228 ARG287 GLY196 GLY197 GLY229 GLY286 ILE199 LEU227 LEU332 LEU334 MET333 PHE198 PHE230 SER364 TYR221 VAL366

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 overlap10Native recall0.83
Jaccard0.50RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
161 1.4948719716080405 -0.763769 -23.4206 1 18 10 0.83 0.00 - 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 -23.421kcal/mol
Ligand efficiency (LE) -0.7319kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.197
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 421.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.90
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 19.43kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 117.61kcal/mol
Minimised FF energy 98.19kcal/mol

SASA & burial

✓ computed
SASA (unbound) 685.4Ų
Total solvent-accessible surface area of free ligand
BSA total 547.0Ų
Buried surface area upon binding
BSA apolar 539.1Ų
Hydrophobic contacts buried
BSA polar 7.9Ų
Polar contacts buried
Fraction buried 79.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 98.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6681.4Ų
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 2059.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)