FAIRMol

Z56911531

Pose ID 11333 Compound 3979 Pose 490

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 Z56911531
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Likely artefact or unreliable pose
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
34.8 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.33, Jaccard 0.18, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
69%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.975 kcal/mol/HA) ✓ Good fit quality (FQ -8.60) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (69%) ✗ Very high strain energy (34.8 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (6) ✗ Internal clashes (6)
Score
-22.414
kcal/mol
LE
-0.975
kcal/mol/HA
Fit Quality
-8.60
FQ (Leeson)
HAC
23
heavy atoms
MW
348
Da
LogP
0.89
cLogP
Strain ΔE
34.8 kcal/mol
SASA buried
80%
Lipo contact
69% BSA apolar/total
SASA unbound
565 Ų
Apolar buried
313 Ų

Interaction summary

HB 8 HY 11 PI 2 CLASH 2
Final rank0.730Score-22.414
Inter norm-1.022Intra norm0.047
Top1000noExcludedno
Contacts14H-bonds8
Artifact reasongeometry warning; 6 clashes; 6 protein contact clashes; high strain Δ 34.8
Residues
ALA284 ARG228 ARG287 GLY196 GLY197 GLY286 ILE199 ILE226 LEU227 MET333 PHE198 PHE230 SER200 TYR221

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
490 0.729750066110726 -1.02184 -22.4141 8 14 4 0.33 0.00 - no Current
434 2.1979263682697665 -1.28704 -29.4642 8 15 0 0.00 0.00 - no Open
416 2.4078156215542394 -1.48722 -30.9174 5 19 0 0.00 0.00 - no Open
451 3.541302908358837 -1.21136 -28.7087 9 10 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 -22.414kcal/mol
Ligand efficiency (LE) -0.9745kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.601
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 348.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.89
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 34.80kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 83.09kcal/mol
Minimised FF energy 48.29kcal/mol

SASA & burial

✓ computed
SASA (unbound) 564.5Ų
Total solvent-accessible surface area of free ligand
BSA total 454.7Ų
Buried surface area upon binding
BSA apolar 313.2Ų
Hydrophobic contacts buried
BSA polar 141.6Ų
Polar contacts buried
Fraction buried 80.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6382.8Ų
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 2089.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)