FAIRMol

OHD_Babesia_21

Pose ID 11558 Compound 644 Pose 37

DB fairmolDocking 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_Babesia_21
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 mixed SASA done
Strain ΔE
62.7 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.54, Jaccard 0.47
Burial
51%
Hydrophobic fit
71%
Reason: strain 62.7 kcal/mol
strain ΔE 62.7 kcal/mol 4 protein-contact clashes 4 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.573 kcal/mol/HA) ✓ Good fit quality (FQ -5.95) ✓ Good H-bonds (4 bonds) ✓ Good burial (51% SASA buried) ✓ Lipophilic contacts well-matched (71%) ✗ Extreme strain energy (62.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (21)
Score
-22.340
kcal/mol
LE
-0.573
kcal/mol/HA
Fit Quality
-5.95
FQ (Leeson)
HAC
39
heavy atoms
MW
545
Da
LogP
-0.72
cLogP
Final rank
5.4190
rank score
Inter norm
-0.585
normalised
Contacts
9
H-bonds 7
Strain ΔE
62.7 kcal/mol
SASA buried
51%
Lipo contact
71% BSA apolar/total
SASA unbound
788 Ų
Apolar buried
286 Ų

Interaction summary

HBD 4 HY 4 PI 2 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

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 overlap7Native recall0.54
Jaccard0.47RMSD-
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
25 4.545849938916814 -0.612181 -23.1555 6 15 0 0.00 - - no Open
50 4.558542500238084 -0.750709 -26.6034 12 17 0 0.00 - - no Open
37 5.41903790277031 -0.585366 -22.3397 7 9 7 0.54 - - no Current
46 5.925882696488416 -0.670681 -24.862 9 11 0 0.00 - - no Open
29 7.449320461081546 -0.724751 -26.6738 7 16 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 -22.340kcal/mol
Ligand efficiency (LE) -0.5728kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.945
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 39HA

Physicochemical properties

Molecular weight 544.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) -0.72
Lipinski: ≤ 5
Rotatable bonds 11

Conformational strain (MMFF94s)

Strain energy (ΔE) 62.70kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 157.93kcal/mol
Minimised FF energy 95.24kcal/mol

SASA & burial

✓ computed
SASA (unbound) 788.1Ų
Total solvent-accessible surface area of free ligand
BSA total 405.1Ų
Buried surface area upon binding
BSA apolar 286.1Ų
Hydrophobic contacts buried
BSA polar 119.0Ų
Polar contacts buried
Fraction buried 51.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 70.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3179.2Ų
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 1490.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)