FAIRMol

KB_Leish_188

Pose ID 10980 Compound 3317 Pose 137

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand KB_Leish_188
PDB5S9T

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
71.9 kcal/mol
Protein clashes
7
Internal clashes
8
Native overlap
contact recall 0.83, Jaccard 0.40, H-bond role recall 0.00
Burial
84%
Hydrophobic fit
96%
Reason: 3 severe internal clashes, 8 internal clashes, strain 71.9 kcal/mol
strain ΔE 71.9 kcal/mol 3 severe internal clashes 7 protein-contact clashes 8 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.690 kcal/mol/HA) ✓ Good fit quality (FQ -7.06) ✓ Good H-bonds (3 bonds) ✓ Deep burial (84% SASA buried) ✓ Lipophilic contacts well-matched (96%) ✗ Extreme strain energy (71.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (18)
Score
-25.511
kcal/mol
LE
-0.690
kcal/mol/HA
Fit Quality
-7.06
FQ (Leeson)
HAC
37
heavy atoms
MW
497
Da
LogP
1.59
cLogP
Strain ΔE
71.9 kcal/mol
SASA buried
84%
Lipo contact
96% BSA apolar/total
SASA unbound
775 Ų
Apolar buried
623 Ų

Interaction summary

HB 3 HY 24 PI 2 CLASH 8 Severe 3
Final rank6.509Score-25.511
Inter norm-0.714Intra norm0.024
Top1000noExcludedno
Contacts23H-bonds3
Artifact reasongeometry warning; 18 clashes; 4 protein clashes; 1 cofactor-context clash; high strain Δ 71.9
Residues
ALA365 ARG228 CYS375 FAD501 GLY229 GLY376 HIS428 ILE378 LEU332 LEU334 LEU377 LYS60 PHE198 PHE230 PHE367 SER364 THR374 VAL362 VAL366 VAL381 HIS461 PRO462 VAL460

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 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 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap10Native recall0.83
Jaccard0.40RMSD-
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
99 2.9168411218518138 -0.759156 -29.7609 7 19 0 0.00 0.00 - no Open
125 2.9786986073425483 -0.776775 -26.3117 5 17 0 0.00 0.00 - no Open
167 3.4370544559114014 -0.579801 -22.5862 5 14 0 0.00 0.00 - no Open
114 3.518118229840114 -0.69556 -27.5891 3 17 0 0.00 0.00 - no Open
137 6.508634883287113 -0.713745 -25.5113 3 23 10 0.83 0.00 - 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 -25.511kcal/mol
Ligand efficiency (LE) -0.6895kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.059
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 37HA

Physicochemical properties

Molecular weight 496.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.59
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 71.93kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 177.27kcal/mol
Minimised FF energy 105.33kcal/mol

SASA & burial

✓ computed
SASA (unbound) 775.1Ų
Total solvent-accessible surface area of free ligand
BSA total 651.0Ų
Buried surface area upon binding
BSA apolar 623.2Ų
Hydrophobic contacts buried
BSA polar 27.8Ų
Polar contacts buried
Fraction buried 84.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 95.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6751.8Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2054.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)