FAIRMol

Z49549408

Pose ID 11277 Compound 303 Pose 434

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 Z49549408
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
32.8 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.33, Jaccard 0.18, H-bond role recall 0.00
Burial
82%
Hydrophobic fit
78%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.560 kcal/mol/HA) ✓ Good fit quality (FQ -4.59) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Very high strain energy (32.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-10.636
kcal/mol
LE
-0.560
kcal/mol/HA
Fit Quality
-4.59
FQ (Leeson)
HAC
19
heavy atoms
MW
279
Da
LogP
2.90
cLogP
Strain ΔE
32.8 kcal/mol
SASA buried
82%
Lipo contact
78% BSA apolar/total
SASA unbound
497 Ų
Apolar buried
320 Ų

Interaction summary

HB 9 HY 18 PI 1 CLASH 6
Final rank2.785Score-10.636
Inter norm-1.209Intra norm0.578
Top1000noExcludedno
Contacts14H-bonds9
Artifact reasongeometry warning; 7 clashes; 1 protein clash; high normalized intra; high strain Δ 32.8
Residues
ALA284 ARG287 GLY195 GLY196 GLY197 GLY286 ILE199 ILE285 LEU332 LEU334 MET333 PHE198 SER200 VAL194

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 overlap4Native recall0.33
Jaccard0.18RMSD-
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
384 -0.4631075654822114 -1.79613 -28.8386 13 12 0 0.00 0.00 - no Open
349 -0.4044800159095025 -2.09147 -32.786 13 11 0 0.00 0.00 - no Open
462 1.9117986893836072 -1.36652 -20.6775 7 16 0 0.00 0.00 - no Open
434 2.784922075947008 -1.20883 -10.6357 9 14 4 0.33 0.00 - no Current
404 3.0222405991617607 -1.11219 -14.7248 10 13 0 0.00 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 -10.636kcal/mol
Ligand efficiency (LE) -0.5598kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.588
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 19HA

Physicochemical properties

Molecular weight 278.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.90
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.81kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 96.51kcal/mol
Minimised FF energy 63.70kcal/mol

SASA & burial

✓ computed
SASA (unbound) 496.9Ų
Total solvent-accessible surface area of free ligand
BSA total 409.2Ų
Buried surface area upon binding
BSA apolar 320.0Ų
Hydrophobic contacts buried
BSA polar 89.2Ų
Polar contacts buried
Fraction buried 82.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6376.7Ų
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 2090.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)