FAIRMol

Z25403655

Pose ID 12108 Compound 2987 Pose 587

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 Z25403655
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native strong SASA done
Strain ΔE
33.6 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.69, Jaccard 0.56
Burial
69%
Hydrophobic fit
64%
Reason: no major geometry red flags detected
1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.635 kcal/mol/HA) ✓ Good fit quality (FQ -6.06) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (64%) ✗ Very high strain energy (33.6 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (7) ✗ Internal clashes (9)
Score
-18.421
kcal/mol
LE
-0.635
kcal/mol/HA
Fit Quality
-6.06
FQ (Leeson)
HAC
29
heavy atoms
MW
433
Da
LogP
3.50
cLogP
Strain ΔE
33.6 kcal/mol
SASA buried
69%
Lipo contact
64% BSA apolar/total
SASA unbound
664 Ų
Apolar buried
292 Ų

Interaction summary

HB 8 HY 24 PI 1 CLASH 1

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 rank1.503Score-18.421
Inter norm-0.760Intra norm0.124
Top1000noExcludedno
Contacts12H-bonds8
Artifact reasongeometry warning; 9 clashes; 7 protein contact clashes; high strain Δ 33.6
Residues
CYS52 GLU18 ILE106 ILE339 LEU17 MET113 SER14 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 overlap9Native recall0.69
Jaccard0.56RMSD-
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
560 0.4219802112234943 -1.115 -30.3827 5 14 0 0.00 - - no Open
562 1.4283150224008307 -0.752873 -21.3542 9 10 0 0.00 - - no Open
587 1.5034175836679107 -0.759669 -18.4209 8 12 9 0.69 - - no Current
564 2.3157924979606697 -0.873015 -23.9565 4 14 0 0.00 - - no Open
573 2.917700286713863 -0.733702 -21.1866 8 12 0 0.00 - - no Open
578 2.9238356039284867 -0.81816 -24.7433 7 17 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 -18.421kcal/mol
Ligand efficiency (LE) -0.6352kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.063
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 432.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.50
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 33.58kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 92.83kcal/mol
Minimised FF energy 59.25kcal/mol

SASA & burial

✓ computed
SASA (unbound) 663.9Ų
Total solvent-accessible surface area of free ligand
BSA total 456.4Ų
Buried surface area upon binding
BSA apolar 291.5Ų
Hydrophobic contacts buried
BSA polar 164.9Ų
Polar contacts buried
Fraction buried 68.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 63.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3084.4Ų
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 1458.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)