FAIRMol

OSA_Lib_8

Pose ID 9639 Compound 4303 Pose 153

DB fairmolDocking 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_8
PDB9IFF

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
19.9 kcal/mol
Protein clashes
2
Internal clashes
18
Native overlap
contact recall 0.85, Jaccard 0.69
Burial
72%
Hydrophobic fit
100%
Reason: 18 internal clashes
2 protein-contact clashes 18 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.496 kcal/mol/HA) ✓ Good fit quality (FQ -5.00) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (100%) ✗ Moderate strain (19.9 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (2) ✗ Many internal clashes (18)
Score
-17.348
kcal/mol
LE
-0.496
kcal/mol/HA
Fit Quality
-5.00
FQ (Leeson)
HAC
35
heavy atoms
MW
467
Da
LogP
4.06
cLogP
Final rank
1.6165
rank score
Inter norm
-0.670
normalised
Contacts
14
H-bonds 2
Strain ΔE
19.9 kcal/mol
SASA buried
72%
Lipo contact
100% BSA apolar/total
SASA unbound
748 Ų
Apolar buried
540 Ų

Interaction summary

HBD 2 HY 7 PI 0 CLASH 0

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 2.

PI · π–π interactions

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

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: permissive.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap11Native recall0.85
Jaccard0.69RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
153 1.6164600875171165 -0.669875 -17.3479 2 14 11 0.85 - - 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 -17.348kcal/mol
Ligand efficiency (LE) -0.4957kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.999
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 466.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.06
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 19.93kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 190.09kcal/mol
Minimised FF energy 170.16kcal/mol

SASA & burial

✓ computed
SASA (unbound) 748.4Ų
Total solvent-accessible surface area of free ligand
BSA total 539.6Ų
Buried surface area upon binding
BSA apolar 539.6Ų
Hydrophobic contacts buried
BSA polar 0.0Ų
Polar contacts buried
Fraction buried 72.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 100.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3216.7Ų
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 1536.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)