FAIRMol

KB_chagas_51

Pose ID 2110 Compound 1905 Pose 77

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T04
L. major PTR1 L. major
Ligand KB_chagas_51
PDB7PXX

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 strong SASA done
Strain ΔE
68.8 kcal/mol
Protein clashes
1
Internal clashes
2
Native overlap
contact recall 0.63, Jaccard 0.57, H-bond role recall 0.60
Burial
74%
Hydrophobic fit
74%
Reason: strain 68.8 kcal/mol
strain ΔE 68.8 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.869 kcal/mol/HA) ✓ Good fit quality (FQ -8.30) ✓ Good H-bonds (3 bonds) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (74%) ✗ Extreme strain energy (68.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-25.205
kcal/mol
LE
-0.869
kcal/mol/HA
Fit Quality
-8.30
FQ (Leeson)
HAC
29
heavy atoms
MW
396
Da
LogP
2.90
cLogP
Strain ΔE
68.8 kcal/mol
SASA buried
74%
Lipo contact
74% BSA apolar/total
SASA unbound
679 Ų
Apolar buried
371 Ų

Interaction summary

HB 3 HY 24 PI 4 CLASH 2

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 rank2.533Score-25.205
Inter norm-0.860Intra norm-0.009
Top1000noExcludedno
Contacts14H-bonds3
Artifact reasongeometry warning; 15 clashes; 1 protein clash; 1 severe cofactor-context clash; high strain Δ 68.8
Residues
ARG17 GLY190 HIS241 LEU188 LEU189 LEU226 LEU229 MET233 NDP302 PHE113 PRO115 SER111 TYR191 TYR194

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name7PXXContacts19
PoseOpen native poseHB0
IFP residues
ARG17 ASP181 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 MET233 NDP302 PHE113 PRO115 SER111 SER112 SER227 TYR191 TYR194 VAL230 ARG287
Current overlap12Native recall0.63
Jaccard0.57RMSD-
HB strict3Strict recall0.50
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

Protein summary

308 residues
Protein targetT04Atoms4210
Residues308Chains3
Residue summaryLEU:494; ALA:421; ARG:384; VAL:368; THR:295; TYR:231; SER:198; PRO:196; ILE:190; LYS:176; ASN:154; GLU:150; GLY:126; PHE:120; HIS:119; ASP:108

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
A:NDP302

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
136 0.9541475883106701 -1.11752 -34.255 4 17 0 0.00 0.00 - no Open
77 2.5330623996853783 -0.859906 -25.2046 3 14 12 0.63 0.60 - 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 -25.205kcal/mol
Ligand efficiency (LE) -0.8691kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.296
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 396.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.90
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 68.82kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 41.92kcal/mol
Minimised FF energy -26.90kcal/mol

SASA & burial

✓ computed
SASA (unbound) 679.5Ų
Total solvent-accessible surface area of free ligand
BSA total 504.1Ų
Buried surface area upon binding
BSA apolar 371.2Ų
Hydrophobic contacts buried
BSA polar 132.9Ų
Polar contacts buried
Fraction buried 74.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 73.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1664.7Ų
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 2179.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1048.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)