FAIRMol

Z44857448

Pose ID 11335 Compound 2257 Pose 492

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 Z44857448
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
64.9 kcal/mol
Protein clashes
14
Internal clashes
14
Native overlap
contact recall 0.83, Jaccard 0.42, H-bond role recall 0.00
Burial
88%
Hydrophobic fit
69%
Reason: 14 protein-contact clashes, 14 internal clashes, strain 64.9 kcal/mol
strain ΔE 64.9 kcal/mol 14 protein-contact clashes 14 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.531 kcal/mol/HA) ✓ Good fit quality (FQ -5.17) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (88% SASA buried) ✓ Lipophilic contacts well-matched (69%) ✗ Extreme strain energy (64.9 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (7)
Score
-16.447
kcal/mol
LE
-0.531
kcal/mol/HA
Fit Quality
-5.17
FQ (Leeson)
HAC
31
heavy atoms
MW
482
Da
LogP
3.47
cLogP
Strain ΔE
64.9 kcal/mol
SASA buried
88%
Lipo contact
69% BSA apolar/total
SASA unbound
711 Ų
Apolar buried
435 Ų

Interaction summary

HB 7 HY 24 PI 3 CLASH 14

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 rank3.826Score-16.447
Inter norm-0.725Intra norm0.194
Top1000noExcludedno
Contacts22H-bonds7
Artifact reasongeometry warning; 7 clashes; 1 protein clash; high strain Δ 64.9
Residues
ALA363 ALA365 ARG361 ASP231 CYS375 FAD501 GLY229 GLY376 HIS359 HIS428 ILE378 LEU332 LEU334 LYS60 MET333 PHE198 PHE230 SER364 THR360 THR374 VAL362 VAL366

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
Jaccard0.42RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
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
418 1.7178316105066913 -1.04238 -27.2479 9 19 0 0.00 0.00 - no Open
435 2.77842743044837 -0.86364 -25.8634 9 14 0 0.00 0.00 - no Open
408 3.3449708047087374 -0.962492 -27.8211 7 14 0 0.00 0.00 - no Open
492 3.826417372388749 -0.724649 -16.4473 7 22 10 0.83 0.00 - no Current
465 4.645331827781998 -0.652702 -13.9801 7 10 0 0.00 0.00 - no Open
453 4.6581234930451165 -1.13084 -29.9989 10 21 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 -16.447kcal/mol
Ligand efficiency (LE) -0.5306kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.169
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 31HA

Physicochemical properties

Molecular weight 481.9Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.47
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 64.90kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 90.13kcal/mol
Minimised FF energy 25.23kcal/mol

SASA & burial

✓ computed
SASA (unbound) 711.4Ų
Total solvent-accessible surface area of free ligand
BSA total 626.6Ų
Buried surface area upon binding
BSA apolar 434.9Ų
Hydrophobic contacts buried
BSA polar 191.7Ų
Polar contacts buried
Fraction buried 88.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 69.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6500.8Ų
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 2049.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)