FAIRMol

KB_chagas_93

Pose ID 10290 Compound 4532 Pose 125

DB SELECTIONDocking 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_chagas_93
PDB6RB5

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 high Native mixed SASA done
Strain ΔE
24.9 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.42, Jaccard 0.24
Burial
69%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.754 kcal/mol/HA) ✓ Good fit quality (FQ -7.20) ✓ Good H-bonds (3 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ High strain energy (24.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-21.857
kcal/mol
LE
-0.754
kcal/mol/HA
Fit Quality
-7.20
FQ (Leeson)
HAC
29
heavy atoms
MW
416
Da
LogP
3.72
cLogP
Strain ΔE
24.9 kcal/mol
SASA buried
69%
Lipo contact
80% BSA apolar/total
SASA unbound
694 Ų
Apolar buried
383 Ų

Interaction summary

HB 3 HY 19 PI 0 CLASH 2
Final rank2.028Score-21.857
Inter norm-0.810Intra norm0.056
Top1000noExcludedno
Contacts14H-bonds3
Artifact reasongeometry warning; 10 clashes; 1 protein clash; moderate strain Δ 24.9
Residues
ALA209 ALA90 ASN91 GLY214 GLY215 LYS211 LYS89 LYS93 PRO187 PRO212 PRO213 TRP92 TYR210 VAL88

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

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 overlap5Native recall0.42
Jaccard0.24RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
125 2.0283367555473246 -0.809831 -21.8571 3 14 5 0.42 - - no Current
124 2.5104118291871114 -1.16734 -33.1197 10 20 0 0.00 - - no Open
106 3.8890145329031203 -1.09434 -33.8041 10 22 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 -21.857kcal/mol
Ligand efficiency (LE) -0.7537kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.195
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 416.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.72
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 24.91kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -76.89kcal/mol
Minimised FF energy -101.81kcal/mol

SASA & burial

✓ computed
SASA (unbound) 694.1Ų
Total solvent-accessible surface area of free ligand
BSA total 480.3Ų
Buried surface area upon binding
BSA apolar 383.3Ų
Hydrophobic contacts buried
BSA polar 97.0Ų
Polar contacts buried
Fraction buried 69.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3165.2Ų
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 1492.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)