FAIRMol

KB_chagas_32

Pose ID 2824 Compound 2306 Pose 114

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T05
L. major PTR1 L. major
Ligand KB_chagas_32
PDB7PXX

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 mixed SASA done
Strain ΔE
27.2 kcal/mol
Protein clashes
6
Internal clashes
7
Native overlap
contact recall 0.53, Jaccard 0.45, H-bond role recall 0.33
Burial
80%
Hydrophobic fit
88%
Reason: 7 internal clashes
6 protein-contact clashes 7 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.727 kcal/mol/HA) ✓ Good fit quality (FQ -6.78) ✓ Good H-bonds (5 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ High strain energy (27.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-19.621
kcal/mol
LE
-0.727
kcal/mol/HA
Fit Quality
-6.78
FQ (Leeson)
HAC
27
heavy atoms
MW
361
Da
LogP
3.10
cLogP
Strain ΔE
27.2 kcal/mol
SASA buried
80%
Lipo contact
88% BSA apolar/total
SASA unbound
625 Ų
Apolar buried
440 Ų

Interaction summary

HB 5 HY 18 PI 2 CLASH 7

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 rank4.485Score-19.621
Inter norm-1.053Intra norm0.326
Top1000noExcludedno
Contacts12H-bonds5
Artifact reasongeometry warning; 9 clashes; 3 protein clashes; 2 cofactor-context clashes; moderate strain Δ 27.2
Residues
ARG17 LEU226 LEU229 NDP302 PHE113 SER111 SER112 SER227 TYR114 TYR194 VAL228 VAL230

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
NameligandContacts17
PoseOpen native poseHB0
IFP residues
ARG17 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 MET233 NDP302 PHE113 PRO115 SER111 SER227 TYR191 TYR194 VAL230 ARG287
Current overlap9Native recall0.53
Jaccard0.45RMSD-
HB strict2Strict recall0.29
HB same residue+role2HB role recall0.33
HB same residue2HB residue recall0.40

Protein summary

274 residues
Protein targetT05Atoms4108
Residues274Chains2
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
114 4.485285214902072 -1.05291 -19.6211 5 12 9 0.53 0.33 - 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 -19.621kcal/mol
Ligand efficiency (LE) -0.7267kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.780
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 361.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.10
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 27.18kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 130.14kcal/mol
Minimised FF energy 102.97kcal/mol

SASA & burial

✓ computed
SASA (unbound) 625.1Ų
Total solvent-accessible surface area of free ligand
BSA total 500.8Ų
Buried surface area upon binding
BSA apolar 439.8Ų
Hydrophobic contacts buried
BSA polar 61.0Ų
Polar contacts buried
Fraction buried 80.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 87.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1691.5Ų
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 1046.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)