FAIRMol

OHD_MAC_67

Pose ID 11262 Compound 511 Pose 419

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 OHD_MAC_67
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
36.8 kcal/mol
Protein clashes
5
Internal clashes
5
Native overlap
contact recall 0.67, Jaccard 0.36, H-bond role recall 0.00
Burial
69%
Hydrophobic fit
79%
Reason: no major geometry red flags detected
5 protein-contact clashes 5 intramolecular clashes 35% of hydrophobic surface appears solvent-exposed (7/20 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.546 kcal/mol/HA) ✓ Good fit quality (FQ -5.42) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (79%) ✗ Very high strain energy (36.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (18)
Score
-18.010
kcal/mol
LE
-0.546
kcal/mol/HA
Fit Quality
-5.42
FQ (Leeson)
HAC
33
heavy atoms
MW
478
Da
LogP
1.61
cLogP
Strain ΔE
36.8 kcal/mol
SASA buried
69%
Lipo contact
79% BSA apolar/total
SASA unbound
703 Ų
Apolar buried
382 Ų

Interaction summary

HB 10 HY 14 PI 2 CLASH 5 ⚠ Exposure 35%

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

⚠️Partial hydrophobic solvent exposure
35% of hydrophobic surface appears solvent-exposed (7/20 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 20 Buried (contacted) 13 Exposed 7 LogP 1.61 H-bonds 10
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (1 atom exposed)
Final rank4.044Score-18.010
Inter norm-0.685Intra norm0.140
Top1000noExcludedno
Contacts18H-bonds10
Artifact reasongeometry warning; 18 clashes; 1 protein clash; high strain Δ 36.8
Residues
ALA363 ARG228 ARG361 CYS375 GLY196 GLY197 GLY229 GLY376 LEU227 LEU332 LEU334 PHE198 PHE230 SER364 THR360 THR374 TYR221 VAL362

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
331 1.7902700583309057 -0.915236 -24.1392 6 17 0 0.00 0.00 - no Open
451 2.876644440223795 -0.83621 -21.5131 4 19 0 0.00 0.00 - no Open
454 3.68647256374911 -0.738459 -19.964 2 16 0 0.00 0.00 - no Open
351 3.872969880470129 -0.923897 -27.655 9 15 0 0.00 0.00 - no Open
368 3.959392997784092 -1.19748 -34.4628 10 18 0 0.00 0.00 - no Open
323 3.962161196702303 -0.853485 -19.9813 11 18 0 0.00 0.00 - no Open
419 4.044111887372217 -0.685336 -18.0096 10 18 8 0.67 0.00 - no Current
346 4.164560827014589 -1.06742 -25.3382 10 16 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 -18.010kcal/mol
Ligand efficiency (LE) -0.5457kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.415
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 477.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.61
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 36.77kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 179.03kcal/mol
Minimised FF energy 142.26kcal/mol

SASA & burial

✓ computed
SASA (unbound) 703.1Ų
Total solvent-accessible surface area of free ligand
BSA total 484.4Ų
Buried surface area upon binding
BSA apolar 381.7Ų
Hydrophobic contacts buried
BSA polar 102.7Ų
Polar contacts buried
Fraction buried 68.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6451.8Ų
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 2200.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)