FAIRMol

OHD_MAC_48

Pose ID 11900 Compound 900 Pose 379

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T18
T. brucei TR (Mepacrine binding site (MBS, site 1)) T. brucei Mepacrine binding site (MBS, site 1)
Ligand OHD_MAC_48
PDB6RB5

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
48.3 kcal/mol
Protein clashes
3
Internal clashes
16
Native overlap
contact recall 0.92, Jaccard 0.63
Burial
69%
Hydrophobic fit
81%
Reason: 16 internal clashes, strain 48.3 kcal/mol
strain ΔE 48.3 kcal/mol 3 protein-contact clashes 16 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.475 kcal/mol/HA) ✓ Good fit quality (FQ -4.75) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Extreme strain energy (48.3 kcal/mol) ✗ Geometry warnings ✗ Minor protein-contact clashes (3) ✗ Many internal clashes (16)
Score
-16.157
kcal/mol
LE
-0.475
kcal/mol/HA
Fit Quality
-4.75
FQ (Leeson)
HAC
34
heavy atoms
MW
461
Da
LogP
3.08
cLogP
Strain ΔE
48.3 kcal/mol
SASA buried
69%
Lipo contact
81% BSA apolar/total
SASA unbound
791 Ų
Apolar buried
446 Ų

Interaction summary

HB 7 HY 24 PI 4 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 rank1.752Score-16.157
Inter norm-0.629Intra norm0.153
Top1000noExcludedno
Contacts18H-bonds7
Artifact reasongeometry warning; 16 clashes; 3 protein contact clashes; high strain Δ 48.3
Residues
ASP116 CYS52 CYS57 GLU18 GLY112 GLY13 GLY49 ILE339 LEU17 MET113 SER109 SER14 THR117 THR335 TRP21 TYR110 VAL53 VAL58

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6RB5Contacts13
PoseOpen native poseHB0
IFP residues
ASP116 GLU18 GLY112 ILE106 LEU17 MET113 SER109 THR117 THR335 TRP21 TYR110 VAL53 VAL58
Current overlap12Native recall0.92
Jaccard0.63RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

493 residues
Protein targetT18Atoms7550
Residues493Chains1
Residue summaryVAL:768; LYS:704; LEU:703; ILE:532; GLU:450; THR:434; ARG:408; PHE:400; ALA:390; ASN:350; PRO:350; GLY:336; SER:319; TYR:294; ASP:276; MET:221

Receptor context

1 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 1 Excluded HETATM 0
Kept cofactors / ions
A:FAD501

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
379 1.7515119447063427 -0.628624 -16.1568 7 18 12 0.92 - - no Current
428 2.1508479025996894 -0.801565 -19.3286 5 18 0 0.00 - - no Open
368 3.090122770978229 -0.741059 -15.222 13 13 0 0.00 - - no Open
448 3.187813687353957 -0.756461 -24.6559 5 15 0 0.00 - - no Open
373 3.331493017527665 -0.760459 -20.8381 6 17 0 0.00 - - no Open
338 4.6424814593420125 -0.949318 -28.0247 14 23 0 0.00 - - no Open
473 4.937071202872829 -0.776684 -21.8871 8 15 0 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 -16.157kcal/mol
Ligand efficiency (LE) -0.4752kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.755
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 461.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.08
Lipinski: ≤ 5
Rotatable bonds 12

Conformational strain (MMFF94s)

Strain energy (ΔE) 48.34kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 117.96kcal/mol
Minimised FF energy 69.62kcal/mol

SASA & burial

✓ computed
SASA (unbound) 791.3Ų
Total solvent-accessible surface area of free ligand
BSA total 547.3Ų
Buried surface area upon binding
BSA apolar 445.7Ų
Hydrophobic contacts buried
BSA polar 101.6Ų
Polar contacts buried
Fraction buried 69.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3240.5Ų
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 4076.6Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1477.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)