FAIRMol

KB_chagas_155

Pose ID 6917 Compound 3683 Pose 143

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_155

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 medium Native strong SASA done
Strain ΔE
35.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.89, Jaccard 0.80, H-bond role recall 0.20
Burial
73%
Hydrophobic fit
81%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG High Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.478 kcal/mol/HA) ✓ Good fit quality (FQ -4.82) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Very high strain energy (35.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-16.720
kcal/mol
LE
-0.478
kcal/mol/HA
Fit Quality
-4.82
FQ (Leeson)
HAC
35
heavy atoms
MW
498
Da
LogP
3.94
cLogP
Final rank
2.2230
rank score
Inter norm
-0.677
normalised
Contacts
18
H-bonds 1
Strain ΔE
35.0 kcal/mol
SASA buried
73%
Lipo contact
81% BSA apolar/total
SASA unbound
832 Ų
Apolar buried
491 Ų

Interaction summary

HBA 1 HY 9 PI 2 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 1.

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.
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 overlap16Native recall0.89
Jaccard0.80RMSD-
HB strict1Strict recall0.20
HB same residue+role1HB role recall0.20
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
464 2.182788962352407 -0.684742 -17.4396 1 18 16 0.89 0.20 - no Open
143 2.22295388132685 -0.677098 -16.7196 1 18 16 0.89 0.20 - 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 -16.720kcal/mol
Ligand efficiency (LE) -0.4777kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.818
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 497.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.94
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.95kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 48.53kcal/mol
Minimised FF energy 13.58kcal/mol

SASA & burial

✓ computed
SASA (unbound) 832.3Ų
Total solvent-accessible surface area of free ligand
BSA total 604.7Ų
Buried surface area upon binding
BSA apolar 490.5Ų
Hydrophobic contacts buried
BSA polar 114.2Ų
Polar contacts buried
Fraction buried 72.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2124.8Ų
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 955.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)