FAIRMol

KB_chagas_164

Pose ID 6918 Compound 3606 Pose 144

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T11
L. infantum SIR2 L. infantum
Ligand KB_chagas_164

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
22.9 kcal/mol
Protein clashes
3
Internal clashes
9
Native overlap
contact recall 0.61, Jaccard 0.61, H-bond role recall 0.40
Burial
76%
Hydrophobic fit
79%
Reason: 9 internal clashes
3 protein-contact clashes 9 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.899 kcal/mol/HA) ✓ Good fit quality (FQ -8.06) ✓ Good H-bonds (3 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ High strain energy (22.9 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Internal clashes (9)
Score
-21.574
kcal/mol
LE
-0.899
kcal/mol/HA
Fit Quality
-8.06
FQ (Leeson)
HAC
24
heavy atoms
MW
337
Da
LogP
2.44
cLogP
Strain ΔE
22.9 kcal/mol
SASA buried
76%
Lipo contact
79% BSA apolar/total
SASA unbound
578 Ų
Apolar buried
345 Ų

Interaction summary

HB 3 HY 24 PI 4 CLASH 0

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.
Final rank0.529Score-21.574
Inter norm-1.061Intra norm0.162
Top1000noExcludedno
Contacts11H-bonds3
Artifact reasongeometry warning; 9 clashes; 3 protein contact clashes; moderate strain Δ 22.9
Residues
GLN220 GLU192 GLY191 HIS144 HIS222 LEU194 PHE189 PHE190 PHE74 VAL188 VAL221

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5OL0Contacts18
PoseOpen native poseHB0
IFP residues
ASN193 GLN220 GLU192 GLY191 HIS144 HIS222 ILE126 LEU194 LEU226 PHE189 PHE190 PHE199 PHE74 PRO223 THR71 VAL187 VAL188 VAL221
Current overlap11Native recall0.61
Jaccard0.61RMSD-
HB strict1Strict recall0.20
HB same residue+role2HB role recall0.40
HB same residue1HB residue recall0.25

Protein summary

287 residues
Protein targetT11Atoms4391
Residues287Chains1
Residue summaryLEU:627; ARG:432; VAL:384; GLU:316; PHE:300; ILE:285; ALA:260; PRO:238; HIS:187; ASP:157; LYS:154; SER:154; THR:154; GLY:147; ASN:140; TYR:126

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
144 0.5290015110922954 -1.0613 -21.5743 3 11 11 0.61 0.40 - no Current
177 2.302710783536821 -0.915306 -19.3633 6 18 0 0.00 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 -21.574kcal/mol
Ligand efficiency (LE) -0.8989kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.056
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 24HA

Physicochemical properties

Molecular weight 337.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.44
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.86kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -209.24kcal/mol
Minimised FF energy -232.10kcal/mol

SASA & burial

✓ computed
SASA (unbound) 577.7Ų
Total solvent-accessible surface area of free ligand
BSA total 436.8Ų
Buried surface area upon binding
BSA apolar 344.8Ų
Hydrophobic contacts buried
BSA polar 92.0Ų
Polar contacts buried
Fraction buried 75.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1877.6Ų
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 2380.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 956.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)