FAIRMol

Z53787229

Pose ID 12147 Compound 727 Pose 626

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 Z53787229
PDB6RB5

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Promising SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
17.7 kcal/mol
Protein clashes
0
Internal clashes
6
Native overlap
contact recall 0.62, Jaccard 0.42
Burial
74%
Hydrophobic fit
86%
Reason: 6 internal clashes
6 intramolecular clashes
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-0.748 kcal/mol/HA) ✓ Good fit quality (FQ -6.60) ✓ Good H-bonds (5 bonds) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (86%) ✗ Moderate strain (17.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-17.201
kcal/mol
LE
-0.748
kcal/mol/HA
Fit Quality
-6.60
FQ (Leeson)
HAC
23
heavy atoms
MW
321
Da
LogP
4.33
cLogP
Strain ΔE
17.7 kcal/mol
SASA buried
74%
Lipo contact
86% BSA apolar/total
SASA unbound
554 Ų
Apolar buried
355 Ų

Interaction summary

HB 5 HY 23 PI 3 CLASH 0
Final rank1.640Score-17.201
Inter norm-0.910Intra norm0.162
Top1000noExcludedno
Contacts14H-bonds5
Artifact reasongeometry warning; 6 clashes; 1 protein clash
Residues
CYS52 GLU18 GLY13 GLY49 GLY50 ILE339 LEU17 MET113 SER14 THR335 TRP21 TYR110 VAL53 VAL58

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

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 overlap8Native recall0.62
Jaccard0.42RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

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
615 -0.13877304892115455 -1.36777 -29.9163 7 15 0 0.00 - - no Open
612 0.9861117454075027 -1.15345 -24.7877 1 16 0 0.00 - - no Open
609 1.3417724214874878 -1.08259 -22.7462 2 15 0 0.00 - - no Open
626 1.6399470227938397 -0.910209 -17.2005 5 14 8 0.62 - - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -17.201kcal/mol
Ligand efficiency (LE) -0.7478kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.600
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 23HA

Physicochemical properties

Molecular weight 321.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.33
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 17.73kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 58.74kcal/mol
Minimised FF energy 41.01kcal/mol

SASA & burial

✓ computed
SASA (unbound) 553.8Ų
Total solvent-accessible surface area of free ligand
BSA total 411.4Ų
Buried surface area upon binding
BSA apolar 355.4Ų
Hydrophobic contacts buried
BSA polar 56.0Ų
Polar contacts buried
Fraction buried 74.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 86.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3085.6Ų
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 1470.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)