FAIRMol

OSA_Lib_315

Pose ID 11043 Compound 4362 Pose 200

DB fairmolDocking 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_315
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
Weak or marginal quality
Binding strong Geometry high Native strong SASA done
Strain ΔE
20.7 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.67, Jaccard 0.35, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
99%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.625 kcal/mol/HA) ✓ Good fit quality (FQ -6.36) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (99%) ✗ High strain energy (20.7 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (14)
Score
-22.514
kcal/mol
LE
-0.625
kcal/mol/HA
Fit Quality
-6.36
FQ (Leeson)
HAC
36
heavy atoms
MW
482
Da
LogP
3.20
cLogP
Strain ΔE
20.7 kcal/mol
SASA buried
80%
Lipo contact
99% BSA apolar/total
SASA unbound
828 Ų
Apolar buried
661 Ų

Interaction summary

HB 1 HY 24 PI 2 CLASH 2

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

Final rank1.384Score-22.514
Inter norm-0.640Intra norm0.009
Top1000noExcludedno
Contacts19H-bonds1
Artifact reasongeometry warning; 14 clashes; 3 protein contact clashes; moderate strain Δ 20.7
Residues
ALA284 ARG287 ASP330 CYS375 FAD501 GLY197 GLY229 GLY286 GLY376 ILE199 LEU332 LEU334 MET333 PHE198 PHE230 SER200 SER364 THR374 VAL362

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 overlap8Native recall0.67
Jaccard0.35RMSD-
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
200 1.384135077070905 -0.639606 -22.5138 1 19 8 0.67 0.00 - no Current
286 2.4493265287903307 -0.699822 -23.7311 2 19 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 -22.514kcal/mol
Ligand efficiency (LE) -0.6254kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.356
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 481.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.20
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 20.67kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 127.90kcal/mol
Minimised FF energy 107.23kcal/mol

SASA & burial

✓ computed
SASA (unbound) 828.4Ų
Total solvent-accessible surface area of free ligand
BSA total 665.9Ų
Buried surface area upon binding
BSA apolar 660.8Ų
Hydrophobic contacts buried
BSA polar 5.1Ų
Polar contacts buried
Fraction buried 80.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6820.3Ų
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 2066.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)