FAIRMol

Z31287535

Pose ID 11289 Compound 858 Pose 446

DB fairmolDocking 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 Z31287535
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
71.4 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.83, Jaccard 0.53, H-bond role recall 1.00
Burial
77%
Hydrophobic fit
85%
Reason: strain 71.4 kcal/mol
strain ΔE 71.4 kcal/mol 2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Good LE (-0.320 kcal/mol/HA) ✓ Good fit quality (FQ -3.26) ✓ Good H-bonds (4 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Extreme strain energy (71.4 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (5) ✗ Many internal clashes (20)
Score
-11.536
kcal/mol
LE
-0.320
kcal/mol/HA
Fit Quality
-3.26
FQ (Leeson)
HAC
36
heavy atoms
MW
488
Da
LogP
1.30
cLogP
Strain ΔE
71.4 kcal/mol
SASA buried
77%
Lipo contact
85% BSA apolar/total
SASA unbound
767 Ų
Apolar buried
503 Ų

Interaction summary

HB 4 HY 24 PI 3 CLASH 2

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

Final rank2.475Score-11.536
Inter norm-0.677Intra norm0.356
Top1000noExcludedno
Contacts17H-bonds4
Artifact reasongeometry warning; 20 clashes; 5 protein contact clashes; high strain Δ 71.4
Residues
ARG228 ARG287 ARG331 ASP330 GLY197 GLY229 GLY376 ILE378 LEU332 LEU334 LEU377 MET333 PHE198 PHE230 SER364 THR374 VAL381

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 overlap10Native recall0.83
Jaccard0.53RMSD-
HB strict1Strict recall1.00
HB same residue+role1HB role recall1.00
HB same residue1HB residue recall1.00

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
461 1.9128810044898366 -0.767114 -21.2851 3 20 0 0.00 0.00 - no Open
446 2.475151175548583 -0.676813 -11.5359 4 17 10 0.83 1.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -11.536kcal/mol
Ligand efficiency (LE) -0.3204kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -3.257
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 487.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.30
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 71.44kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 281.19kcal/mol
Minimised FF energy 209.75kcal/mol

SASA & burial

✓ computed
SASA (unbound) 766.9Ų
Total solvent-accessible surface area of free ligand
BSA total 591.4Ų
Buried surface area upon binding
BSA apolar 503.5Ų
Hydrophobic contacts buried
BSA polar 87.9Ų
Polar contacts buried
Fraction buried 77.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6628.3Ų
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 2085.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)