FAIRMol

KB_chagas_167

Pose ID 2835 Compound 2148 Pose 125

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_167
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
41.9 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.59, Jaccard 0.48, H-bond role recall 0.33
Burial
86%
Hydrophobic fit
86%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.936 kcal/mol/HA) ✓ Good fit quality (FQ -8.63) ✓ Good H-bonds (4 bonds) ✓ Deep burial (86% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ Extreme strain energy (41.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-24.347
kcal/mol
LE
-0.936
kcal/mol/HA
Fit Quality
-8.63
FQ (Leeson)
HAC
26
heavy atoms
MW
352
Da
LogP
1.94
cLogP
Strain ΔE
41.9 kcal/mol
SASA buried
86%
Lipo contact
86% BSA apolar/total
SASA unbound
631 Ų
Apolar buried
464 Ų

Interaction summary

HB 4 HY 21 PI 3 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 rank2.208Score-24.347
Inter norm-1.069Intra norm0.133
Top1000noExcludedno
Contacts14H-bonds4
Artifact reasongeometry warning; 10 clashes; 1 protein clash; high strain Δ 41.9
Residues
ARG17 ASP181 GLY225 LEU226 LEU229 MET183 NDP302 PHE113 SER112 SER227 TYR194 VAL228 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
Jaccard0.48RMSD-
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
177 0.38218059275337485 -1.31004 -28.263 7 17 0 0.00 0.00 - no Open
166 1.7277268210081542 -0.801117 -19.7826 5 14 0 0.00 0.00 - no Open
125 2.2077973244492752 -1.06921 -24.3471 4 14 10 0.59 0.33 - no Current
178 2.7850607619818324 -0.917712 -23.8235 7 12 0 0.00 0.00 - no Open
158 3.123051576130239 -0.970498 -23.2857 2 18 0 0.00 0.00 - no Open
113 4.299520092302835 -1.13983 -27.923 9 16 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 -24.347kcal/mol
Ligand efficiency (LE) -0.9364kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.628
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 352.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.94
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 41.95kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 116.79kcal/mol
Minimised FF energy 74.84kcal/mol

SASA & burial

✓ computed
SASA (unbound) 630.8Ų
Total solvent-accessible surface area of free ligand
BSA total 539.9Ų
Buried surface area upon binding
BSA apolar 463.6Ų
Hydrophobic contacts buried
BSA polar 76.3Ų
Polar contacts buried
Fraction buried 85.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1694.1Ų
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 1035.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)