FAIRMol

Z49628846

Pose ID 11401 Compound 3012 Pose 558

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 Z49628846
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
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
22.7 kcal/mol
Protein clashes
0
Internal clashes
11
Native overlap
contact recall 0.58, Jaccard 0.37, H-bond role recall 1.00
Burial
82%
Hydrophobic fit
85%
Reason: 11 internal clashes
11 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.571 kcal/mol/HA) ✓ Good fit quality (FQ -5.26) ✓ Good H-bonds (3 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ High strain energy (22.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-14.855
kcal/mol
LE
-0.571
kcal/mol/HA
Fit Quality
-5.26
FQ (Leeson)
HAC
26
heavy atoms
MW
344
Da
LogP
4.45
cLogP
Strain ΔE
22.7 kcal/mol
SASA buried
82%
Lipo contact
85% BSA apolar/total
SASA unbound
621 Ų
Apolar buried
435 Ų

Interaction summary

HB 3 HY 24 PI 3 CLASH 0

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

No clash · clashes detected for this pose.
Final rank3.035Score-14.855
Inter norm-0.855Intra norm0.282
Top1000noExcludedno
Contacts14H-bonds3
Artifact reasongeometry warning; 11 clashes; 2 protein clashes; moderate strain Δ 22.7
Residues
ALA284 ARG287 ARG331 FAD501 GLY197 GLY286 ILE199 LEU332 LEU334 MET333 PHE198 PHE230 SER200 SER364

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 overlap7Native recall0.58
Jaccard0.37RMSD-
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
526 0.6409395339681533 -1.2315 -30.6716 5 14 0 0.00 0.00 - no Open
527 2.0089429246725263 -1.22432 -31.5412 7 15 0 0.00 0.00 - no Open
583 2.028788667769846 -0.89851 -17.9649 1 15 0 0.00 0.00 - no Open
558 3.035354955052957 -0.855052 -14.8555 3 14 7 0.58 1.00 - no Current
533 3.145909239658254 -1.06862 -21.7447 5 14 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 -14.855kcal/mol
Ligand efficiency (LE) -0.5714kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.264
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 26HA

Physicochemical properties

Molecular weight 344.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.45
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.73kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 123.80kcal/mol
Minimised FF energy 101.07kcal/mol

SASA & burial

✓ computed
SASA (unbound) 621.2Ų
Total solvent-accessible surface area of free ligand
BSA total 510.7Ų
Buried surface area upon binding
BSA apolar 434.8Ų
Hydrophobic contacts buried
BSA polar 75.9Ų
Polar contacts buried
Fraction buried 82.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6543.4Ų
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 2052.9Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)