FAIRMol

Z44591573

Pose ID 11467 Compound 1210 Pose 624

DB fairmolDocking 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 Z44591573
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
45.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.67, Jaccard 0.36, H-bond role recall 0.00
Burial
85%
Hydrophobic fit
88%
Reason: strain 45.2 kcal/mol
strain ΔE 45.2 kcal/mol 2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.607 kcal/mol/HA) ✓ Good fit quality (FQ -5.73) ✓ Good H-bonds (3 bonds) ✓ Deep burial (85% SASA buried) ✓ Lipophilic contacts well-matched (88%) ✗ Extreme strain energy (45.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-16.989
kcal/mol
LE
-0.607
kcal/mol/HA
Fit Quality
-5.73
FQ (Leeson)
HAC
28
heavy atoms
MW
397
Da
LogP
4.14
cLogP
Strain ΔE
45.2 kcal/mol
SASA buried
85%
Lipo contact
88% BSA apolar/total
SASA unbound
679 Ų
Apolar buried
505 Ų

Interaction summary

HB 3 HY 24 PI 4 CLASH 2

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 rank3.342Score-16.989
Inter norm-0.798Intra norm0.191
Top1000noExcludedno
Contacts18H-bonds3
Artifact reasongeometry warning; 13 clashes; 2 protein clashes; high strain Δ 45.2
Residues
ALA284 ARG287 ASP231 GLY197 GLY229 GLY286 GLY376 HIS428 ILE199 ILE378 LEU332 LEU334 MET333 PHE198 PHE230 SER200 SER364 THR374

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 overlap8Native recall0.67
Jaccard0.36RMSD-
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
602 1.1357693546221022 -0.813918 -16.5317 0 17 0 0.00 0.00 - no Open
616 1.9150463881723574 -0.963331 -24.9045 3 16 0 0.00 0.00 - no Open
609 2.1735595906442664 -1.09358 -26.1104 4 14 0 0.00 0.00 - no Open
604 2.3131829618973265 -0.999243 -25.907 5 12 0 0.00 0.00 - no Open
624 3.3423050438406383 -0.798124 -16.9894 3 18 8 0.67 0.00 - no Current
620 3.51941158421158 -0.691049 -18.7615 6 8 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 -16.989kcal/mol
Ligand efficiency (LE) -0.6068kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.728
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 397.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.14
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 45.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy -15.85kcal/mol
Minimised FF energy -61.08kcal/mol

SASA & burial

✓ computed
SASA (unbound) 678.8Ų
Total solvent-accessible surface area of free ligand
BSA total 576.8Ų
Buried surface area upon binding
BSA apolar 504.8Ų
Hydrophobic contacts buried
BSA polar 72.0Ų
Polar contacts buried
Fraction buried 85.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 87.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6571.7Ų
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 2060.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)