FAIRMol

KB_chagas_217

Pose ID 6925 Compound 3716 Pose 151

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_217

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 mixed SASA done
Strain ΔE
25.3 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.50, Jaccard 0.36, H-bond role recall 0.20
Burial
93%
Hydrophobic fit
88%
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 (-0.903 kcal/mol/HA) ✓ Good fit quality (FQ -7.97) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (93% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ High strain energy (25.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-20.779
kcal/mol
LE
-0.903
kcal/mol/HA
Fit Quality
-7.97
FQ (Leeson)
HAC
23
heavy atoms
MW
309
Da
LogP
1.57
cLogP
Strain ΔE
25.3 kcal/mol
SASA buried
93%
Lipo contact
88% BSA apolar/total
SASA unbound
580 Ų
Apolar buried
476 Ų

Interaction summary

HB 6 HY 24 PI 3 CLASH 1
Final rank2.639Score-20.779
Inter norm-1.047Intra norm0.134
Top1000noExcludedno
Contacts16H-bonds6
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; moderate strain Δ 25.3
Residues
ASN125 ASP127 GLN124 HIS144 ILE126 ILE48 LEU194 LEU93 LEU95 PHE189 PHE190 PHE51 PHE74 VAL187 VAL188 VAL221

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

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 overlap9Native recall0.50
Jaccard0.36RMSD-
HB strict1Strict recall0.20
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.25

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
190 1.92180459980088 -0.861592 -19.2982 5 11 0 0.00 0.00 - no Open
151 2.63884878854898 -1.04653 -20.7791 6 16 9 0.50 0.20 - no Current
137 4.47002663616061 -0.995709 -22.3742 6 16 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 -20.779kcal/mol
Ligand efficiency (LE) -0.9034kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.974
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 309.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.57
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 25.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -94.05kcal/mol
Minimised FF energy -119.30kcal/mol

SASA & burial

✓ computed
SASA (unbound) 580.3Ų
Total solvent-accessible surface area of free ligand
BSA total 538.6Ų
Buried surface area upon binding
BSA apolar 475.8Ų
Hydrophobic contacts buried
BSA polar 62.8Ų
Polar contacts buried
Fraction buried 92.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1948.7Ų
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 945.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)