FAIRMol

OSA_Lib_160

Pose ID 9703 Compound 4340 Pose 217

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand OSA_Lib_160
PDB9IFF

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising and worth follow-up
Binding strong Geometry medium Native strong SASA done
Strain ΔE
13.5 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.62, Jaccard 0.47
Burial
70%
Hydrophobic fit
99%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-0.932 kcal/mol/HA) ✓ Good fit quality (FQ -8.70) ✓ Deep burial (70% SASA buried) ✓ Lipophilic contacts well-matched (99%) ✗ Moderate strain (13.5 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-25.167
kcal/mol
LE
-0.932
kcal/mol/HA
Fit Quality
-8.70
FQ (Leeson)
HAC
27
heavy atoms
MW
382
Da
LogP
4.03
cLogP
Strain ΔE
13.5 kcal/mol
SASA buried
70%
Lipo contact
99% BSA apolar/total
SASA unbound
636 Ų
Apolar buried
444 Ų

Interaction summary

HB 2 HY 22 PI 0 CLASH 4
Final rank2.293Score-25.167
Inter norm-0.924Intra norm-0.021
Top1000noExcludedno
Contacts12H-bonds2
Artifact reasongeometry warning; 8 clashes; 1 protein clash
Residues
ALA209 ALA90 GLY214 GLY215 GLY85 LYS211 LYS89 PRO212 PRO213 SER86 TYR210 VAL88

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
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:264; MET:204

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap8Native recall0.62
Jaccard0.47RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

HB · H-bonds

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

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
217 2.2933404232417973 -0.924139 -25.1667 2 12 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 -25.167kcal/mol
Ligand efficiency (LE) -0.9321kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.696
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 382.0Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.03
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 13.45kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 100.32kcal/mol
Minimised FF energy 86.87kcal/mol

SASA & burial

✓ computed
SASA (unbound) 636.2Ų
Total solvent-accessible surface area of free ligand
BSA total 446.6Ų
Buried surface area upon binding
BSA apolar 443.5Ų
Hydrophobic contacts buried
BSA polar 3.0Ų
Polar contacts buried
Fraction buried 70.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3069.0Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1569.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)