FAIRMol

KB_Leish_188

Pose ID 10279 Compound 3317 Pose 114

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T16
T. brucei TR (Dimer interface (site 2)) T. brucei Dimer interface (site 2)
Ligand KB_Leish_188
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
49.7 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.83, Jaccard 0.53
Burial
78%
Hydrophobic fit
98%
Reason: strain 49.7 kcal/mol
strain ΔE 49.7 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.746 kcal/mol/HA) ✓ Good fit quality (FQ -7.63) ✓ Good H-bonds (3 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (98%) ✗ Extreme strain energy (49.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-27.589
kcal/mol
LE
-0.746
kcal/mol/HA
Fit Quality
-7.63
FQ (Leeson)
HAC
37
heavy atoms
MW
497
Da
LogP
1.59
cLogP
Strain ΔE
49.7 kcal/mol
SASA buried
78%
Lipo contact
98% BSA apolar/total
SASA unbound
815 Ų
Apolar buried
629 Ų

Interaction summary

HB 3 HY 24 PI 1 CLASH 1

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

Final rank3.518Score-27.589
Inter norm-0.696Intra norm-0.050
Top1000noExcludedno
Contacts17H-bonds3
Artifact reasongeometry warning; 15 clashes; 2 protein clashes; high strain Δ 49.6
Residues
ALA209 ALA77 ALA90 ARG74 GLU82 GLY214 GLY85 LEU73 LYS211 LYS89 MET70 PHE83 PRO212 PRO213 TRP81 TYR210 VAL88

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts12
PoseOpen native poseHB0
IFP residues
ALA90 ARG74 GLY85 LEU73 LYS89 MET70 PHE83 PRO212 PRO213 SER86 SER87 VAL88
Current overlap10Native recall0.83
Jaccard0.53RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

493 residues
Protein targetT16Atoms7551
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
99 2.9168411218518138 -0.759156 -29.7609 7 19 0 0.00 - - no Open
125 2.9786986073425483 -0.776775 -26.3117 5 17 0 0.00 - - no Open
167 3.4370544559114014 -0.579801 -22.5862 5 14 0 0.00 - - no Open
114 3.518118229840114 -0.69556 -27.5891 3 17 10 0.83 - - no Current
137 6.508634883287113 -0.713745 -25.5113 3 23 0 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 -27.589kcal/mol
Ligand efficiency (LE) -0.7457kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.634
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) 49.69kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 161.45kcal/mol
Minimised FF energy 111.77kcal/mol

SASA & burial

✓ computed
SASA (unbound) 815.2Ų
Total solvent-accessible surface area of free ligand
BSA total 638.5Ų
Buried surface area upon binding
BSA apolar 628.8Ų
Hydrophobic contacts buried
BSA polar 9.7Ų
Polar contacts buried
Fraction buried 78.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 98.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3415.4Ų
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 1456.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)