FAIRMol

KB_chagas_34

Pose ID 2825 Compound 361 Pose 115

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_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 medium Native strong SASA done
Strain ΔE
19.7 kcal/mol
Protein clashes
1
Internal clashes
3
Native overlap
contact recall 0.59, Jaccard 0.45, H-bond role recall 0.17
Burial
83%
Hydrophobic fit
88%
Reason: no major geometry red flags detected
1 protein-contact clashes 3 intramolecular clashes 42% of hydrophobic surface appears solvent-exposed (11/26 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.758 kcal/mol/HA) ✓ Good fit quality (FQ -7.46) ✓ Good H-bonds (3 bonds) ✓ Deep burial (83% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Moderate strain (19.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-24.265
kcal/mol
LE
-0.758
kcal/mol/HA
Fit Quality
-7.46
FQ (Leeson)
HAC
32
heavy atoms
MW
433
Da
LogP
2.82
cLogP
Strain ΔE
19.7 kcal/mol
SASA buried
83%
Lipo contact
88% BSA apolar/total
SASA unbound
693 Ų
Apolar buried
509 Ų

Interaction summary

HB 3 HY 14 PI 2 CLASH 3 ⚠ Exposure 42%

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

⚠️Partial hydrophobic solvent exposure
42% of hydrophobic surface appears solvent-exposed (11/26 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 26 Buried (contacted) 15 Exposed 11 LogP 2.82 H-bonds 3
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)phenyl (4/5 atoms exposed)
Final rank3.078Score-24.265
Inter norm-0.869Intra norm0.111
Top1000noExcludedno
Contacts15H-bonds3
Artifact reasongeometry warning; 12 clashes; 2 protein clashes; 2 cofactor-context clashes
Residues
ARG17 ASP181 GLY225 LEU188 LEU226 LYS16 MET183 NDP302 PHE113 SER111 SER112 TYR114 TYR194 VAL230 ARG287

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 overlap10Native recall0.59
Jaccard0.45RMSD-
HB strict1Strict recall0.14
HB same residue+role1HB role recall0.17
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
133 0.3461138562934019 -0.982697 -28.5447 2 18 0 0.00 0.00 - no Open
164 0.7410461600265953 -0.816792 -20.7917 1 17 0 0.00 0.00 - no Open
127 1.1617110201641345 -0.80525 -20.0936 1 17 0 0.00 0.00 - no Open
171 2.1316708086463296 -0.849187 -25.4797 2 18 0 0.00 0.00 - no Open
115 3.0781456025554954 -0.868961 -24.265 3 15 10 0.59 0.17 - no Current
173 3.547894738936712 -0.671206 -19.4104 4 12 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 -24.265kcal/mol
Ligand efficiency (LE) -0.7583kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.457
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 432.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.82
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 19.73kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 66.14kcal/mol
Minimised FF energy 46.41kcal/mol

SASA & burial

✓ computed
SASA (unbound) 693.0Ų
Total solvent-accessible surface area of free ligand
BSA total 575.2Ų
Buried surface area upon binding
BSA apolar 509.3Ų
Hydrophobic contacts buried
BSA polar 65.9Ų
Polar contacts buried
Fraction buried 83.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 88.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1734.5Ų
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 1069.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)