FAIRMol

Z18551701

Pose ID 11506 Compound 2512 Pose 663

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 Z18551701
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
26.8 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.75, Jaccard 0.43, H-bond role recall 1.00
Burial
80%
Hydrophobic fit
69%
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 (-0.578 kcal/mol/HA) ✓ Good fit quality (FQ -5.63) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (69%) ✗ High strain energy (26.8 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-17.915
kcal/mol
LE
-0.578
kcal/mol/HA
Fit Quality
-5.63
FQ (Leeson)
HAC
31
heavy atoms
MW
498
Da
LogP
4.09
cLogP
Strain ΔE
26.8 kcal/mol
SASA buried
80%
Lipo contact
69% BSA apolar/total
SASA unbound
753 Ų
Apolar buried
414 Ų

Interaction summary

HB 7 HY 24 PI 2 CLASH 3
Final rank2.346Score-17.915
Inter norm-0.744Intra norm0.166
Top1000noExcludedno
Contacts18H-bonds7
Artifact reasongeometry warning; 8 clashes; 1 protein clash; moderate strain Δ 26.8
Residues
ARG287 ARG331 ARG361 ASP330 CYS375 GLY229 GLY376 HIS359 HIS428 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR360 THR374 VAL362

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 overlap9Native recall0.75
Jaccard0.43RMSD-
HB strict1Strict recall1.00
HB same residue+role1HB role recall1.00
HB same residue1HB residue recall1.00

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
651 1.2636502207322342 -0.848526 -22.0344 2 21 0 0.00 0.00 - no Open
656 1.3945405974040013 -1.03109 -23.2357 4 18 0 0.00 0.00 - no Open
663 2.3456112024268174 -0.744151 -17.9154 7 18 9 0.75 1.00 - no Current
665 3.6065487690211078 -0.845392 -21.6251 7 15 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 -17.915kcal/mol
Ligand efficiency (LE) -0.5779kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.630
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 498.1Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.09
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 26.84kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 20.32kcal/mol
Minimised FF energy -6.53kcal/mol

SASA & burial

✓ computed
SASA (unbound) 753.1Ų
Total solvent-accessible surface area of free ligand
BSA total 603.9Ų
Buried surface area upon binding
BSA apolar 414.0Ų
Hydrophobic contacts buried
BSA polar 189.8Ų
Polar contacts buried
Fraction buried 80.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6521.4Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2100.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)