FAIRMol

OSA_Lib_27

Pose ID 9652 Compound 4337 Pose 166

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_27
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 high Native strong SASA done
Strain ΔE
14.4 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.62, Jaccard 0.40
Burial
70%
Hydrophobic fit
100%
Reason: no major geometry red flags detected
2 protein-contact 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 Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.807 kcal/mol/HA) ✓ Good fit quality (FQ -7.62) ✓ Deep burial (70% SASA buried) ✓ Lipophilic contacts well-matched (100%) ✗ Moderate strain (14.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-22.608
kcal/mol
LE
-0.807
kcal/mol/HA
Fit Quality
-7.62
FQ (Leeson)
HAC
28
heavy atoms
MW
417
Da
LogP
3.41
cLogP
Final rank
2.2424
rank score
Inter norm
-0.888
normalised
Contacts
15
H-bonds 2
Strain ΔE
14.4 kcal/mol
SASA buried
70%
Lipo contact
100% BSA apolar/total
SASA unbound
659 Ų
Apolar buried
462 Ų

Interaction summary

HBD 2 HY 6 PI 0 CLASH 2

HBD/HBA · H-bonds (geometric)

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

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 overlap8Native recall0.62
Jaccard0.40RMSD-
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
166 2.242408755556902 -0.888092 -22.6085 2 15 8 0.62 - - no Current
295 2.4016683866368376 -0.890257 -22.6247 2 15 8 0.62 - - no Open
157 2.5499316569181887 -0.857054 -22.1195 2 13 0 0.00 - - no Open
289 52.540945201887936 -0.857526 -22.1321 2 13 0 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 -22.608kcal/mol
Ligand efficiency (LE) -0.8074kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.623
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 417.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.41
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 14.42kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 160.13kcal/mol
Minimised FF energy 145.72kcal/mol

SASA & burial

✓ computed
SASA (unbound) 659.4Ų
Total solvent-accessible surface area of free ligand
BSA total 462.4Ų
Buried surface area upon binding
BSA apolar 462.4Ų
Hydrophobic contacts buried
BSA polar 0.0Ų
Polar contacts buried
Fraction buried 70.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 100.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3106.9Ų
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 1557.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)