FAIRMol

OSA_Lib_20

Pose ID 9647 Compound 1173 Pose 161

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_20
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
24.4 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.69, Jaccard 0.50
Burial
68%
Hydrophobic fit
98%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.621 kcal/mol/HA) ✓ Good fit quality (FQ -6.27) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (98%) ✗ High strain energy (24.4 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-21.747
kcal/mol
LE
-0.621
kcal/mol/HA
Fit Quality
-6.27
FQ (Leeson)
HAC
35
heavy atoms
MW
477
Da
LogP
0.96
cLogP
Final rank
2.9145
rank score
Inter norm
-0.705
normalised
Contacts
14
H-bonds 2
Strain ΔE
24.4 kcal/mol
SASA buried
68%
Lipo contact
98% BSA apolar/total
SASA unbound
820 Ų
Apolar buried
551 Ų

Interaction summary

HBD 2 HY 8 PI 0 CLASH 1

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 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 1.7517512504337927 -0.760862 -23.0834 0 22 0 0.00 - - no Open
161 2.914476947736246 -0.705396 -21.7469 2 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 -21.747kcal/mol
Ligand efficiency (LE) -0.6213kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.267
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 476.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.96
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.36kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 173.25kcal/mol
Minimised FF energy 148.89kcal/mol

SASA & burial

✓ computed
SASA (unbound) 819.5Ų
Total solvent-accessible surface area of free ligand
BSA total 559.7Ų
Buried surface area upon binding
BSA apolar 550.5Ų
Hydrophobic contacts buried
BSA polar 9.2Ų
Polar contacts buried
Fraction buried 68.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 98.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3269.0Ų
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 1525.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)