FAIRMol

Z18509545

Pose ID 11485 Compound 2461 Pose 642

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 Z18509545
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 strong SASA done
Strain ΔE
23.1 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.58, Jaccard 0.37, H-bond role recall 1.00
Burial
80%
Hydrophobic fit
82%
Reason: 10 internal clashes
10 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.737 kcal/mol/HA) ✓ Good fit quality (FQ -7.04) ✓ Good H-bonds (3 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (23.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-21.377
kcal/mol
LE
-0.737
kcal/mol/HA
Fit Quality
-7.04
FQ (Leeson)
HAC
29
heavy atoms
MW
410
Da
LogP
2.78
cLogP
Strain ΔE
23.1 kcal/mol
SASA buried
80%
Lipo contact
82% BSA apolar/total
SASA unbound
631 Ų
Apolar buried
414 Ų

Interaction summary

HB 3 HY 19 PI 0 CLASH 0
Final rank2.908Score-21.377
Inter norm-0.765Intra norm0.028
Top1000noExcludedno
Contacts14H-bonds3
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; moderate strain Δ 23.1
Residues
ARG228 ARG287 ARG331 ASP330 GLY196 GLY197 GLY286 LEU227 LEU332 LEU334 MET333 PHE198 PHE230 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 overlap7Native recall0.58
Jaccard0.37RMSD-
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

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

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
620 0.8780322138855498 -0.904267 -23.3199 0 16 0 0.00 0.00 - no Open
642 2.9075729189780244 -0.7654 -21.3765 3 14 7 0.58 1.00 - no Current
642 3.259827785463704 -0.711603 -19.7334 6 13 0 0.00 0.00 - no Open
639 3.3149430830984703 -1.0974 -32.3995 6 19 0 0.00 0.00 - no Open
642 3.347272408076479 -0.865048 -23.3667 12 15 0 0.00 0.00 - no Open
623 3.4158599517817776 -0.786036 -21.3729 4 14 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 -21.377kcal/mol
Ligand efficiency (LE) -0.7371kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.036
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 410.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.78
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.10kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 28.44kcal/mol
Minimised FF energy 5.33kcal/mol

SASA & burial

✓ computed
SASA (unbound) 630.9Ų
Total solvent-accessible surface area of free ligand
BSA total 501.7Ų
Buried surface area upon binding
BSA apolar 414.2Ų
Hydrophobic contacts buried
BSA polar 87.6Ų
Polar contacts buried
Fraction buried 79.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6482.3Ų
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 2082.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)