FAIRMol

KB_chagas_167

Pose ID 3544 Compound 2148 Pose 158

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T06
T. brucei DHFR T. brucei
Ligand KB_chagas_167
PDB8RHT

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
44.7 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.67, Jaccard 0.56, H-bond role recall 0.00
Burial
95%
Hydrophobic fit
86%
Reason: strain 44.7 kcal/mol
strain ΔE 44.7 kcal/mol 5 protein-contact clashes 5 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.896 kcal/mol/HA) ✓ Good fit quality (FQ -8.25) ✓ Deep burial (95% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ Extreme strain energy (44.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-23.286
kcal/mol
LE
-0.896
kcal/mol/HA
Fit Quality
-8.25
FQ (Leeson)
HAC
26
heavy atoms
MW
352
Da
LogP
1.94
cLogP
Strain ΔE
44.7 kcal/mol
SASA buried
95%
Lipo contact
86% BSA apolar/total
SASA unbound
625 Ų
Apolar buried
512 Ų

Interaction summary

HB 2 HY 24 PI 3 CLASH 5
Final rank3.123Score-23.286
Inter norm-0.970Intra norm0.075
Top1000noExcludedno
Contacts18H-bonds2
Artifact reasongeometry warning; 8 clashes; 2 protein clashes; high strain Δ 44.7
Residues
ALA34 ARG100 ARG59 GLN56 GLY161 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE58 PHE94 PRO91 THR86 TYR166 VAL32 VAL33

Protein summary

223 residues
Protein targetT06Atoms3452
Residues223Chains1
Residue summaryARG:408; VAL:352; LYS:308; LEU:304; PRO:238; ILE:209; GLU:195; THR:182; SER:176; ALA:160; PHE:140; ASN:126; GLY:126; ASP:108; GLN:85; NDP:74

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:NDP301

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name8RHTContacts21
PoseOpen native poseHB0
IFP residues
ALA34 ASP54 HIS182 ILE160 ILE47 LEU90 LEU97 MET55 NDP301 PHE233 PHE58 PHE94 PRO91 SER89 THR184 THR86 TRP49 TYR166 TYR57 VAL32 VAL33
Current overlap14Native recall0.67
Jaccard0.56RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
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 0 0.00 0.00 - no Open
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 14 0.67 0.00 - no Current
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 -23.286kcal/mol
Ligand efficiency (LE) -0.8956kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.251
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) 44.70kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 166.22kcal/mol
Minimised FF energy 121.52kcal/mol

SASA & burial

✓ computed
SASA (unbound) 625.0Ų
Total solvent-accessible surface area of free ligand
BSA total 596.5Ų
Buried surface area upon binding
BSA apolar 511.9Ų
Hydrophobic contacts buried
BSA polar 84.6Ų
Polar contacts buried
Fraction buried 95.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1773.8Ų
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 1808.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 575.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)