FAIRMol

KB_Leish_19

Pose ID 7543 Compound 3907 Pose 91

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand KB_Leish_19
PDB6FXS

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
10.2 kcal/mol
Protein clashes
10
Internal clashes
10
Native overlap
contact recall 0.88, Jaccard 0.74, H-bond role recall 0.50
Burial
82%
Hydrophobic fit
80%
Reason: 10 protein-contact clashes, 10 internal clashes
10 protein-contact clashes 10 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.233 kcal/mol/HA) ✓ Good fit quality (FQ -10.71) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Moderate strain (10.2 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-27.130
kcal/mol
LE
-1.233
kcal/mol/HA
Fit Quality
-10.71
FQ (Leeson)
HAC
22
heavy atoms
MW
288
Da
LogP
2.66
cLogP
Strain ΔE
10.2 kcal/mol
SASA buried
82%
Lipo contact
80% BSA apolar/total
SASA unbound
526 Ų
Apolar buried
347 Ų

Interaction summary

HB 11 HY 7 PI 3 CLASH 10
Final rank3.619Score-27.130
Inter norm-1.258Intra norm0.025
Top1000noExcludedno
Contacts17H-bonds11
Artifact reasongeometry warning; 9 clashes; 1 protein clash
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 MET101 ARG46 ASP13 ASP48 CYS72 GLY73 GLY77 HIS14 ILE15 SER74 TYR49 VAL47

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

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:CSD72

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap14Native recall0.88
Jaccard0.74RMSD-
HB strict7Strict recall0.58
HB same residue+role5HB role recall0.50
HB same residue5HB residue recall0.50

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
91 3.6194887458232743 -1.25823 -27.1304 11 17 14 0.88 0.50 - 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 -27.130kcal/mol
Ligand efficiency (LE) -1.2332kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -10.707
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 22HA

Physicochemical properties

Molecular weight 288.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.66
Lipinski: ≤ 5
Rotatable bonds 3

Conformational strain (MMFF94s)

Strain energy (ΔE) 10.17kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -74.23kcal/mol
Minimised FF energy -84.39kcal/mol

SASA & burial

✓ computed
SASA (unbound) 525.9Ų
Total solvent-accessible surface area of free ligand
BSA total 431.8Ų
Buried surface area upon binding
BSA apolar 346.7Ų
Hydrophobic contacts buried
BSA polar 85.1Ų
Polar contacts buried
Fraction buried 82.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2132.4Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 762.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)