FAIRMol

OSA_Lib_279

Pose ID 9760 Compound 4266 Pose 274

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_279
PDB9IFF

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
32.2 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.77, Jaccard 0.48
Burial
79%
Hydrophobic fit
99%
Reason: no major geometry red flags detected
1 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 ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.643 kcal/mol/HA) ✓ Good fit quality (FQ -6.38) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (99%) ✗ Very high strain energy (32.2 kcal/mol) ✗ No H-bonds detected ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-21.220
kcal/mol
LE
-0.643
kcal/mol/HA
Fit Quality
-6.38
FQ (Leeson)
HAC
33
heavy atoms
MW
448
Da
LogP
2.85
cLogP
Final rank
0.9612
rank score
Inter norm
-0.705
normalised
Contacts
18
H-bonds 0
Strain ΔE
32.2 kcal/mol
SASA buried
79%
Lipo contact
99% BSA apolar/total
SASA unbound
791 Ų
Apolar buried
624 Ų

Interaction summary

HB 0 HY 11 PI 1 CLASH 1

HBD/HBA · H-bonds (geometric)

No hbd/hba · h-bonds (geometric) detected for this pose.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

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 overlap10Native recall0.77
Jaccard0.48RMSD-
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
274 0.9612390589578108 -0.705441 -21.2197 0 18 10 0.77 - - 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 -21.220kcal/mol
Ligand efficiency (LE) -0.6430kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.380
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 447.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.85
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 175.22kcal/mol
Minimised FF energy 142.97kcal/mol

SASA & burial

✓ computed
SASA (unbound) 791.2Ų
Total solvent-accessible surface area of free ligand
BSA total 627.8Ų
Buried surface area upon binding
BSA apolar 623.8Ų
Hydrophobic contacts buried
BSA polar 4.0Ų
Polar contacts buried
Fraction buried 79.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 99.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3288.4Ų
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 1499.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)