FAIRMol

OSA_Lib_1

Pose ID 10303 Compound 4523 Pose 138

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T16
T. brucei TR (Dimer interface (site 2)) T. brucei Dimer interface (site 2)
Ligand OSA_Lib_1
PDB6RB5

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 medium Native strong SASA done
Strain ΔE
22.4 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.75, Jaccard 0.47
Burial
69%
Hydrophobic fit
100%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Bioaccum.
vB — Very bioaccumulative (BCF>5000)
Persistent
Yes
ADMET alerts (in-silico)
hERG High Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.585 kcal/mol/HA) ✓ Good fit quality (FQ -5.99) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (100%) ✗ High strain energy (22.4 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Many internal clashes (17)
Score
-21.646
kcal/mol
LE
-0.585
kcal/mol/HA
Fit Quality
-5.99
FQ (Leeson)
HAC
37
heavy atoms
MW
535
Da
LogP
6.78
cLogP
Final rank
1.8344
rank score
Inter norm
-0.643
normalised
Contacts
16
H-bonds 1
Strain ΔE
22.4 kcal/mol
SASA buried
69%
Lipo contact
100% BSA apolar/total
SASA unbound
812 Ų
Apolar buried
561 Ų

Interaction summary

HBA 1 HY 7 PI 0 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 1.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: permissive.
Name6RB5Contacts12
PoseOpen native poseHB0
IFP residues
ALA90 ARG74 GLY85 LEU73 LYS89 MET70 PHE83 PRO212 PRO213 SER86 SER87 VAL88
Current overlap9Native recall0.75
Jaccard0.47RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

493 residues
Protein targetT16Atoms7551
Residues493Chains1
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:276; MET:221

Receptor context

1 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 1 Excluded HETATM 0
Kept cofactors / ions
A:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
117 1.4195580406870996 -0.812234 -26.8411 1 18 0 0.00 - - no Open
138 1.8344116519649407 -0.642811 -21.6456 1 16 9 0.75 - - 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 -21.646kcal/mol
Ligand efficiency (LE) -0.5850kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.989
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 37HA

Physicochemical properties

Molecular weight 534.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 6.78
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.42kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 131.79kcal/mol
Minimised FF energy 109.37kcal/mol

SASA & burial

✓ computed
SASA (unbound) 811.9Ų
Total solvent-accessible surface area of free ligand
BSA total 561.6Ų
Buried surface area upon binding
BSA apolar 561.0Ų
Hydrophobic contacts buried
BSA polar 0.5Ų
Polar contacts buried
Fraction buried 69.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3331.8Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1556.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)