FAIRMol

OHD_TB2022_29

Pose ID 10912 Compound 3965 Pose 69

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 OHD_TB2022_29
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 mixed SASA done
Strain ΔE
66.7 kcal/mol
Protein clashes
0
Internal clashes
5
Native overlap
contact recall 0.33, Jaccard 0.17, H-bond role recall 0.00
Burial
77%
Hydrophobic fit
61%
Reason: strain 66.7 kcal/mol
strain ΔE 66.7 kcal/mol 5 intramolecular clashes 42% of hydrophobic surface appears solvent-exposed (5/12 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.630 kcal/mol/HA) ✓ Good fit quality (FQ -5.73) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (77% SASA buried) ✓ Lipophilic contacts well-matched (61%) ✗ Extreme strain energy (66.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-15.759
kcal/mol
LE
-0.630
kcal/mol/HA
Fit Quality
-5.73
FQ (Leeson)
HAC
25
heavy atoms
MW
378
Da
LogP
-1.58
cLogP
Strain ΔE
66.7 kcal/mol
SASA buried
77%
Lipo contact
61% BSA apolar/total
SASA unbound
588 Ų
Apolar buried
279 Ų

Interaction summary

HB 11 HY 9 PI 1 CLASH 0 ⚠ Exposure 41%
⚠️Partial hydrophobic solvent exposure
42% of hydrophobic surface appears solvent-exposed (5/12 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 12 Buried (contacted) 7 Exposed 5 LogP -1.58 H-bonds 11
Exposed fragments: aliphatic chain/group (5 atoms exposed)
Final rank4.472Score-15.759
Inter norm-0.945Intra norm0.314
Top1000noExcludedno
Contacts16H-bonds11
Artifact reasongeometry warning; 5 clashes; 3 protein clashes; high strain Δ 66.7
Residues
ALA284 ARG228 ARG287 ASP330 GLY195 GLY196 GLY197 GLY229 GLY286 ILE199 ILE285 LEU227 MET333 PHE198 SER200 TYR221

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

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 overlap4Native recall0.33
Jaccard0.17RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
69 4.47170641172371 -0.945394 -15.7587 11 16 4 0.33 0.00 - no Current
49 7.624151691292718 -1.23229 -21.9929 16 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 -15.759kcal/mol
Ligand efficiency (LE) -0.6303kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.730
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 25HA

Physicochemical properties

Molecular weight 378.3Da
Lipinski: ≤ 500 Da
LogP (cLogP) -1.58
Lipinski: ≤ 5
Rotatable bonds 13

Conformational strain (MMFF94s)

Strain energy (ΔE) 66.67kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 109.28kcal/mol
Minimised FF energy 42.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 588.3Ų
Total solvent-accessible surface area of free ligand
BSA total 454.4Ų
Buried surface area upon binding
BSA apolar 278.6Ų
Hydrophobic contacts buried
BSA polar 175.8Ų
Polar contacts buried
Fraction buried 77.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 61.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6361.7Ų
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 2064.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)