FAIRMol

KB_Leish_178

Pose ID 11665 Compound 54 Pose 144

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_178
PDB6RB5

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
40.1 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.62, Jaccard 0.47
Burial
65%
Hydrophobic fit
89%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.689 kcal/mol/HA) ✓ Good fit quality (FQ -6.83) ✓ Deep burial (65% SASA buried) ✓ Lipophilic contacts well-matched (89%) ✗ Extreme strain energy (40.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-22.723
kcal/mol
LE
-0.689
kcal/mol/HA
Fit Quality
-6.83
FQ (Leeson)
HAC
33
heavy atoms
MW
493
Da
LogP
1.64
cLogP
Final rank
1.8531
rank score
Inter norm
-0.695
normalised
Contacts
12
H-bonds 2
Strain ΔE
40.1 kcal/mol
SASA buried
65%
Lipo contact
89% BSA apolar/total
SASA unbound
747 Ų
Apolar buried
436 Ų

Interaction summary

HBD 1 HBA 1 HY 6 PI 2 CLASH 1

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

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
Jaccard0.47RMSD-
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
164 0.7186450809020493 -0.789328 -22.5926 3 18 0 0.00 - - no Open
144 1.8530786229235432 -0.694866 -22.7227 2 12 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 -22.723kcal/mol
Ligand efficiency (LE) -0.6886kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.832
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 493.1Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.64
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 40.11kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 97.28kcal/mol
Minimised FF energy 57.17kcal/mol

SASA & burial

✓ computed
SASA (unbound) 746.5Ų
Total solvent-accessible surface area of free ligand
BSA total 487.9Ų
Buried surface area upon binding
BSA apolar 435.6Ų
Hydrophobic contacts buried
BSA polar 52.3Ų
Polar contacts buried
Fraction buried 65.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3260.4Ų
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 1478.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)