FAIRMol

Z44831334

Pose ID 11419 Compound 1896 Pose 576

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 Z44831334
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 medium Native strong SASA done
Strain ΔE
30.1 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.83, Jaccard 0.50, H-bond role recall 1.00
Burial
86%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Daphnia EC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.729 kcal/mol/HA) ✓ Good fit quality (FQ -6.88) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (86% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Very high strain energy (30.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-20.405
kcal/mol
LE
-0.729
kcal/mol/HA
Fit Quality
-6.88
FQ (Leeson)
HAC
28
heavy atoms
MW
374
Da
LogP
3.31
cLogP
Final rank
3.6344
rank score
Inter norm
-0.965
normalised
Contacts
18
H-bonds 10
Strain ΔE
30.1 kcal/mol
SASA buried
86%
Lipo contact
79% BSA apolar/total
SASA unbound
660 Ų
Apolar buried
444 Ų

Interaction summary

HBD 3 HBA 5 HY 8 PI 3 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 6.

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: permissive.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap10Native recall0.83
Jaccard0.50RMSD-
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
539 1.0361740438829137 -0.957481 -16.3487 3 21 0 0.00 0.00 - no Open
579 1.6489256767487757 -0.830657 -23.7177 4 16 0 0.00 0.00 - no Open
565 1.8444497913320552 -0.786086 -17.0873 8 12 0 0.00 0.00 - no Open
557 2.333048353539209 -0.880881 -15.3644 6 14 0 0.00 0.00 - no Open
576 3.6344160793458276 -0.964617 -20.405 10 18 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 -20.405kcal/mol
Ligand efficiency (LE) -0.7288kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.880
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 374.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.31
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.15kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 131.03kcal/mol
Minimised FF energy 100.88kcal/mol

SASA & burial

✓ computed
SASA (unbound) 660.4Ų
Total solvent-accessible surface area of free ligand
BSA total 564.5Ų
Buried surface area upon binding
BSA apolar 443.9Ų
Hydrophobic contacts buried
BSA polar 120.6Ų
Polar contacts buried
Fraction buried 85.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6519.6Ų
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 2074.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)