FAIRMol

KB_chagas_58

Pose ID 2111 Compound 1836 Pose 78

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_58
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 medium Native strong SASA done
Strain ΔE
37.8 kcal/mol
Protein clashes
1
Internal clashes
2
Native overlap
contact recall 0.74, Jaccard 0.74, H-bond role recall 0.60
Burial
80%
Hydrophobic fit
92%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.796 kcal/mol/HA) ✓ Good fit quality (FQ -7.42) ✓ Good H-bonds (3 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (92%) ✗ Very high strain energy (37.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-21.480
kcal/mol
LE
-0.796
kcal/mol/HA
Fit Quality
-7.42
FQ (Leeson)
HAC
27
heavy atoms
MW
380
Da
LogP
3.39
cLogP
Strain ΔE
37.8 kcal/mol
SASA buried
80%
Lipo contact
92% BSA apolar/total
SASA unbound
614 Ų
Apolar buried
451 Ų

Interaction summary

HB 3 HY 24 PI 5 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 rank1.669Score-21.480
Inter norm-0.950Intra norm0.155
Top1000noExcludedno
Contacts14H-bonds3
Artifact reasongeometry warning; 10 clashes; 1 protein clash; 1 severe cofactor-context clash; high strain Δ 37.8
Residues
ARG17 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 NDP302 PHE113 SER111 SER112 TYR191 TYR194 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 overlap14Native recall0.74
Jaccard0.74RMSD-
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
78 1.6692729710025795 -0.950213 -21.4805 3 14 14 0.74 0.60 - no Current
103 2.960386822804398 -1.13922 -27.0542 8 18 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 -21.480kcal/mol
Ligand efficiency (LE) -0.7956kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.422
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 380.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.39
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 37.76kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 32.31kcal/mol
Minimised FF energy -5.45kcal/mol

SASA & burial

✓ computed
SASA (unbound) 613.5Ų
Total solvent-accessible surface area of free ligand
BSA total 491.1Ų
Buried surface area upon binding
BSA apolar 450.7Ų
Hydrophobic contacts buried
BSA polar 40.4Ų
Polar contacts buried
Fraction buried 80.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1642.8Ų
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 1109.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)