FAIRMol

KB_Leish_40

Pose ID 9603 Compound 400 Pose 117

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand KB_Leish_40
PDB9IFF

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
30.8 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.69, Jaccard 0.43
Burial
72%
Hydrophobic fit
90%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.029 kcal/mol/HA) ✓ Good fit quality (FQ -9.83) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (90%) ✗ Very high strain energy (30.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-29.852
kcal/mol
LE
-1.029
kcal/mol/HA
Fit Quality
-9.83
FQ (Leeson)
HAC
29
heavy atoms
MW
388
Da
LogP
2.47
cLogP
Strain ΔE
30.8 kcal/mol
SASA buried
72%
Lipo contact
90% BSA apolar/total
SASA unbound
721 Ų
Apolar buried
465 Ų

Interaction summary

HB 9 HY 13 PI 0 CLASH 3

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

Final rank2.864Score-29.852
Inter norm-0.896Intra norm-0.134
Top1000noExcludedno
Contacts17H-bonds9
Artifact reasongeometry warning; 10 clashes; 1 protein clash; high strain Δ 30.8
Residues
ALA209 ALA244 ALA90 ARG74 ASN208 ASN245 ASP71 GLY214 GLY215 GLY246 LYS211 LYS89 MET70 PRO212 PRO213 TYR210 TYR408

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap9Native recall0.69
Jaccard0.43RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
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:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
155 2.3507399186119113 -0.924223 -26.6674 4 22 0 0.00 - - no Open
151 2.4780143162078496 -0.748644 -18.6901 8 12 0 0.00 - - no Open
147 2.521922647015896 -1.17277 -26.7971 5 16 0 0.00 - - no Open
117 2.522623868849702 -1.0011 -24.7836 6 20 0 0.00 - - no Open
90 2.7270695040419697 -1.20729 -38.0707 8 24 0 0.00 - - no Open
117 2.8637611573919117 -0.895553 -29.8517 9 17 9 0.69 - - 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 -29.852kcal/mol
Ligand efficiency (LE) -1.0294kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.826
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 388.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.47
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.77kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 35.53kcal/mol
Minimised FF energy 4.76kcal/mol

SASA & burial

✓ computed
SASA (unbound) 720.6Ų
Total solvent-accessible surface area of free ligand
BSA total 519.5Ų
Buried surface area upon binding
BSA apolar 464.9Ų
Hydrophobic contacts buried
BSA polar 54.6Ų
Polar contacts buried
Fraction buried 72.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 89.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3067.9Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1571.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)