FAIRMol

KB_chagas_147

Pose ID 2118 Compound 1800 Pose 85

DB SELECTIONDocking 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_147
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
56.8 kcal/mol
Protein clashes
1
Internal clashes
3
Native overlap
contact recall 0.68, Jaccard 0.65, H-bond role recall 0.60
Burial
81%
Hydrophobic fit
70%
Reason: strain 56.8 kcal/mol
strain ΔE 56.8 kcal/mol 1 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.749 kcal/mol/HA) ✓ Good fit quality (FQ -6.98) ✓ Good H-bonds (4 bonds) ✓ Deep burial (81% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ Extreme strain energy (56.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-20.212
kcal/mol
LE
-0.749
kcal/mol/HA
Fit Quality
-6.98
FQ (Leeson)
HAC
27
heavy atoms
MW
374
Da
LogP
1.97
cLogP
Strain ΔE
56.8 kcal/mol
SASA buried
81%
Lipo contact
70% BSA apolar/total
SASA unbound
654 Ų
Apolar buried
371 Ų

Interaction summary

HB 4 HY 20 PI 2 CLASH 3
Final rank1.879Score-20.212
Inter norm-0.963Intra norm0.214
Top1000noExcludedno
Contacts14H-bonds4
Artifact reasongeometry warning; 9 clashes; 1 protein clash; 2 cofactor-context clashes; high strain Δ 54.2
Residues
ARG17 ASP232 HIS241 LEU188 LEU226 LEU229 MET233 NDP302 PHE113 SER111 SER112 TYR191 TYR194 VAL230

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

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 strict2Strict recall0.33
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
587 1.0300070261286374 -0.842181 -18.9797 6 20 0 0.00 0.00 - no Open
152 1.2038171119593215 -0.836055 -19.0197 6 20 0 0.00 0.00 - no Open
596 1.401669115485946 -1.0034 -19.8522 4 14 13 0.68 0.60 - no Open
85 1.8785913278857078 -0.962909 -20.2123 4 14 13 0.68 0.60 - no Current
128 3.7195514082044556 -1.15288 -31.0223 9 19 0 0.00 0.00 - no Open
596 3.7411352647708025 -1.15182 -30.9892 11 19 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 -20.212kcal/mol
Ligand efficiency (LE) -0.7486kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.984
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 374.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.97
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 56.76kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -32.40kcal/mol
Minimised FF energy -89.16kcal/mol

SASA & burial

✓ computed
SASA (unbound) 654.4Ų
Total solvent-accessible surface area of free ligand
BSA total 533.0Ų
Buried surface area upon binding
BSA apolar 370.6Ų
Hydrophobic contacts buried
BSA polar 162.3Ų
Polar contacts buried
Fraction buried 81.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 69.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1637.2Ų
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 1022.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)