FAIRMol

KB_chagas_34

Pose ID 2109 Compound 1067 Pose 76

DB fairmolDocking 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_34
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
Weak or marginal quality
Binding strong Geometry high Native strong SASA done
Strain ΔE
21.0 kcal/mol
Protein clashes
0
Internal clashes
2
Native overlap
contact recall 0.68, Jaccard 0.65, H-bond role recall 0.00
Burial
74%
Hydrophobic fit
95%
Reason: no major geometry red flags detected
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.773 kcal/mol/HA) ✓ Good fit quality (FQ -7.61) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (95%) ✗ High strain energy (21.0 kcal/mol) ✗ No H-bonds detected ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-24.749
kcal/mol
LE
-0.773
kcal/mol/HA
Fit Quality
-7.61
FQ (Leeson)
HAC
32
heavy atoms
MW
434
Da
LogP
1.79
cLogP
Strain ΔE
21.0 kcal/mol
SASA buried
74%
Lipo contact
95% BSA apolar/total
SASA unbound
716 Ų
Apolar buried
504 Ų

Interaction summary

HB 0 HY 24 PI 1 CLASH 2

HB · H-bonds

No hb · h-bonds detected for this pose.

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 rank0.376Score-24.749
Inter norm-0.852Intra norm0.079
Top1000noExcludedno
Contacts14H-bonds0
Artifact reasongeometry warning; 11 clashes; 2 cofactor-context clashes; moderate strain Δ 21.0
Residues
ARG17 ASP232 GLY225 HIS241 LEU188 LEU226 LEU229 MET233 NDP302 PHE113 TYR191 TYR194 VAL230 ARG287

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 overlap13Native recall0.68
Jaccard0.65RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
76 0.37560719838015166 -0.852181 -24.7488 0 14 13 0.68 0.00 - no Current
157 0.7240158380332364 -0.857409 -25.8818 1 18 0 0.00 0.00 - no Open
150 3.0895711984440926 -0.698753 -21.5775 3 15 0 0.00 0.00 - no Open
101 4.482413895575699 -0.991474 -28.731 6 25 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 -24.749kcal/mol
Ligand efficiency (LE) -0.7734kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.606
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 433.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.79
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 20.96kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 102.50kcal/mol
Minimised FF energy 81.53kcal/mol

SASA & burial

✓ computed
SASA (unbound) 716.3Ų
Total solvent-accessible surface area of free ligand
BSA total 531.4Ų
Buried surface area upon binding
BSA apolar 504.3Ų
Hydrophobic contacts buried
BSA polar 27.1Ų
Polar contacts buried
Fraction buried 74.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 94.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1756.8Ų
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 2179.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1086.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)