FAIRMol

KB_chagas_167

Pose ID 12331 Compound 5180 Pose 130

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T19
T. brucei TR (NADPH binding site) T. brucei NADPH binding site
Ligand KB_chagas_167
PDB2WOV

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
42.2 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.26, Jaccard 0.18, H-bond role recall 0.00
Burial
88%
Hydrophobic fit
86%
Reason: strain 42.2 kcal/mol
strain ΔE 42.2 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-1.131 kcal/mol/HA) ✓ Good fit quality (FQ -10.42) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (88% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ Extreme strain energy (42.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-29.413
kcal/mol
LE
-1.131
kcal/mol/HA
Fit Quality
-10.42
FQ (Leeson)
HAC
26
heavy atoms
MW
352
Da
LogP
1.94
cLogP
Strain ΔE
42.2 kcal/mol
SASA buried
88%
Lipo contact
86% BSA apolar/total
SASA unbound
633 Ų
Apolar buried
474 Ų

Interaction summary

HB 7 HY 22 PI 1 CLASH 1

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

Final rank4.009Score-29.413
Inter norm-1.249Intra norm0.118
Top1000noExcludedno
Contacts18H-bonds7
Artifact reasongeometry warning; 9 clashes; 3 protein clashes; high strain Δ 42.2
Residues
ALA365 CYS52 CYS57 GLU202 GLY56 ILE199 LEU334 LYS60 MET333 NDP800 PHE182 PHE203 PRO336 SER178 SER364 THR335 THR51 VAL55

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name2WOVContacts27
PoseOpen native poseHB0
IFP residues
ALA284 ALA365 ARG222 ARG228 ARG287 ASN223 ASN254 GLN165 GLU202 GLY195 GLY196 GLY197 GLY286 ILE199 ILE285 LEU227 LEU334 LYS60 MET333 NDP800 PHE198 PHE367 PRO167 SER200 TYR221 VAL194 VAL366
Current overlap7Native recall0.26
Jaccard0.18RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

Protein summary

493 residues
Protein targetT19Atoms7541
Residues493Chains1
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:330; TYR:294; ASP:264; MET:221

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
C:NDP800

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
130 4.009188672262165 -1.24918 -29.413 7 18 7 0.26 0.00 - 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 -29.413kcal/mol
Ligand efficiency (LE) -1.1313kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.423
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 352.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.94
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 42.23kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 163.76kcal/mol
Minimised FF energy 121.52kcal/mol

SASA & burial

✓ computed
SASA (unbound) 633.5Ų
Total solvent-accessible surface area of free ligand
BSA total 554.2Ų
Buried surface area upon binding
BSA apolar 474.4Ų
Hydrophobic contacts buried
BSA polar 79.8Ų
Polar contacts buried
Fraction buried 87.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3141.0Ų
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 4064.7Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1477.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)