FAIRMol

Z49576389

Pose ID 11355 Compound 2246 Pose 512

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 Z49576389
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
57.0 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.83, Jaccard 0.45, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
70%
Reason: strain 57.0 kcal/mol
strain ΔE 57.0 kcal/mol 4 protein-contact clashes 4 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.749 kcal/mol/HA) ✓ Good fit quality (FQ -7.37) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ Extreme strain energy (57.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-23.965
kcal/mol
LE
-0.749
kcal/mol/HA
Fit Quality
-7.37
FQ (Leeson)
HAC
32
heavy atoms
MW
470
Da
LogP
3.49
cLogP
Strain ΔE
57.0 kcal/mol
SASA buried
80%
Lipo contact
70% BSA apolar/total
SASA unbound
705 Ų
Apolar buried
397 Ų

Interaction summary

HB 9 HY 19 PI 3 CLASH 4

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 rank3.200Score-23.965
Inter norm-0.767Intra norm0.018
Top1000noExcludedno
Contacts20H-bonds9
Artifact reasongeometry warning; 11 clashes; 1 protein clash; high strain Δ 57.0
Residues
ALA284 ALA363 ALA365 ARG228 CYS375 GLY197 GLY229 GLY286 GLY376 HIS428 ILE199 ILE285 LEU332 LEU334 PHE198 PHE230 SER364 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
Jaccard0.45RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
479 2.8108492091469657 -0.88225 -20.3015 13 17 0 0.00 0.00 - no Open
471 3.03343921078592 -1.09123 -31.7486 6 19 0 0.00 0.00 - no Open
512 3.2000412737749646 -0.767238 -23.9647 9 20 10 0.83 0.00 - no Current
437 3.2182369061624767 -0.877682 -24.4062 8 16 0 0.00 0.00 - no Open
480 3.9800365169738785 -0.613783 -15.551 4 13 0 0.00 0.00 - no Open
443 8.275983902545669 -1.08587 -27.7506 12 19 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 -23.965kcal/mol
Ligand efficiency (LE) -0.7489kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.365
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 469.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.49
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 56.97kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 8.53kcal/mol
Minimised FF energy -48.44kcal/mol

SASA & burial

✓ computed
SASA (unbound) 704.5Ų
Total solvent-accessible surface area of free ligand
BSA total 565.7Ų
Buried surface area upon binding
BSA apolar 396.6Ų
Hydrophobic contacts buried
BSA polar 169.1Ų
Polar contacts buried
Fraction buried 80.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 70.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6491.0Ų
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 2072.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)