FAIRMol

Z19456089

Pose ID 11297 Compound 1238 Pose 454

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 Z19456089
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 high Native mixed SASA done
Strain ΔE
23.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.50, Jaccard 0.27, H-bond role recall 0.00
Burial
82%
Hydrophobic fit
72%
Reason: no major geometry red flags detected
2 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG High Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.677 kcal/mol/HA) ✓ Good fit quality (FQ -6.66) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (72%) ✗ High strain energy (23.2 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (4) ✗ Internal clashes (9)
Score
-21.657
kcal/mol
LE
-0.677
kcal/mol/HA
Fit Quality
-6.66
FQ (Leeson)
HAC
32
heavy atoms
MW
472
Da
LogP
4.43
cLogP
Final rank
0.9820
rank score
Inter norm
-0.719
normalised
Contacts
16
H-bonds 2
Strain ΔE
23.2 kcal/mol
SASA buried
82%
Lipo contact
72% BSA apolar/total
SASA unbound
664 Ų
Apolar buried
388 Ų

Interaction summary

HBA 2 HY 8 PI 3 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

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 overlap6Native recall0.50
Jaccard0.27RMSD-
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
454 0.9820416630673475 -0.718628 -21.6568 2 16 6 0.50 0.00 - no Current
440 2.0990534002216545 -0.942546 -22.9614 3 15 0 0.00 0.00 - no Open
368 3.276619061336012 -0.980047 -28.5038 7 14 0 0.00 0.00 - no Open
424 4.476669211177931 -0.794718 -17.7116 12 17 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 -21.657kcal/mol
Ligand efficiency (LE) -0.6768kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.655
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 471.9Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.43
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 23.18kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 46.88kcal/mol
Minimised FF energy 23.70kcal/mol

SASA & burial

✓ computed
SASA (unbound) 664.4Ų
Total solvent-accessible surface area of free ligand
BSA total 542.7Ų
Buried surface area upon binding
BSA apolar 387.9Ų
Hydrophobic contacts buried
BSA polar 154.8Ų
Polar contacts buried
Fraction buried 81.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 71.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6474.1Ų
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 2060.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)