FAIRMol

KB_Leish_102

Pose ID 11658 Compound 3842 Pose 137

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T18
T. brucei TR (Mepacrine binding site (MBS, site 1)) T. brucei Mepacrine binding site (MBS, site 1)
Ligand KB_Leish_102
PDB6RB5

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
23.8 kcal/mol
Protein clashes
0
Internal clashes
5
Native overlap
contact recall 0.62, Jaccard 0.42
Burial
71%
Hydrophobic fit
94%
Reason: no major geometry red flags detected
5 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.716 kcal/mol/HA) ✓ Good fit quality (FQ -6.32) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (71% SASA buried) ✓ Lipophilic contacts well-matched (94%) ✗ High strain energy (23.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-16.471
kcal/mol
LE
-0.716
kcal/mol/HA
Fit Quality
-6.32
FQ (Leeson)
HAC
23
heavy atoms
MW
310
Da
LogP
1.57
cLogP
Strain ΔE
23.8 kcal/mol
SASA buried
71%
Lipo contact
94% BSA apolar/total
SASA unbound
559 Ų
Apolar buried
374 Ų

Interaction summary

HB 7 HY 15 PI 2 CLASH 0

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

No clash · clashes detected for this pose.
Final rank1.519Score-16.471
Inter norm-0.899Intra norm0.183
Top1000noExcludedno
Contacts14H-bonds7
Artifact reasongeometry warning; 5 clashes; 1 protein clash; moderate strain Δ 23.8
Residues
CYS52 GLU18 GLY13 GLY49 GLY50 ILE106 ILE339 LEU17 MET113 SER109 SER14 THR335 TYR110 VAL53

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts13
PoseOpen native poseHB0
IFP residues
ASP116 GLU18 GLY112 ILE106 LEU17 MET113 SER109 THR117 THR335 TRP21 TYR110 VAL53 VAL58
Current overlap8Native recall0.62
Jaccard0.42RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

493 residues
Protein targetT18Atoms7550
Residues493Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:276; MET:221

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:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
123 0.10592004599192299 -1.04822 -24.1621 5 13 0 0.00 - - no Open
99 1.288652952551071 -1.1661 -23.8854 7 20 0 0.00 - - no Open
107 1.412855325087305 -1.07972 -22.0499 6 11 0 0.00 - - no Open
162 1.4926657424115972 -0.90001 -18.9506 3 9 0 0.00 - - no Open
137 1.5191068721501768 -0.899115 -16.4714 7 14 8 0.62 - - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -16.471kcal/mol
Ligand efficiency (LE) -0.7161kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.321
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 310.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.57
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.84kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 38.63kcal/mol
Minimised FF energy 14.79kcal/mol

SASA & burial

✓ computed
SASA (unbound) 558.6Ų
Total solvent-accessible surface area of free ligand
BSA total 398.8Ų
Buried surface area upon binding
BSA apolar 374.5Ų
Hydrophobic contacts buried
BSA polar 24.3Ų
Polar contacts buried
Fraction buried 71.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 93.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3129.8Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1472.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)