FAIRMol

OSA_Lib_17

Pose ID 9646 Compound 4449 Pose 160

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_17
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
23.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.69, Jaccard 0.50
Burial
72%
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. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG High Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.766 kcal/mol/HA) ✓ Good fit quality (FQ -7.46) ✓ Good H-bonds (4 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (100%) ✗ High strain energy (23.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-23.741
kcal/mol
LE
-0.766
kcal/mol/HA
Fit Quality
-7.46
FQ (Leeson)
HAC
31
heavy atoms
MW
460
Da
LogP
3.39
cLogP
Final rank
3.5402
rank score
Inter norm
-0.830
normalised
Contacts
14
H-bonds 4
Strain ΔE
23.3 kcal/mol
SASA buried
72%
Lipo contact
100% BSA apolar/total
SASA unbound
707 Ų
Apolar buried
510 Ų

Interaction summary

HBD 4 HY 7 PI 0 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.

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: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap9Native recall0.69
Jaccard0.50RMSD-
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
178 1.1860405131815077 -0.662118 -19.8224 2 11 0 0.00 - - no Open
160 3.540175530346249 -0.829565 -23.7405 4 14 9 0.69 - - 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 -23.741kcal/mol
Ligand efficiency (LE) -0.7658kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.461
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 460.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.39
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.34kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 165.64kcal/mol
Minimised FF energy 142.30kcal/mol

SASA & burial

✓ computed
SASA (unbound) 707.2Ų
Total solvent-accessible surface area of free ligand
BSA total 511.8Ų
Buried surface area upon binding
BSA apolar 510.1Ų
Hydrophobic contacts buried
BSA polar 1.7Ų
Polar contacts buried
Fraction buried 72.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3158.8Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1551.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)