FAIRMol

Z20127922

Pose ID 12190 Compound 3133 Pose 669

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 Z20127922
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
26.6 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.85, Jaccard 0.61
Burial
72%
Hydrophobic fit
81%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.678 kcal/mol/HA) ✓ Good fit quality (FQ -6.89) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ High strain energy (26.6 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (7) ✗ Many internal clashes (16)
Score
-24.422
kcal/mol
LE
-0.678
kcal/mol/HA
Fit Quality
-6.89
FQ (Leeson)
HAC
36
heavy atoms
MW
519
Da
LogP
4.37
cLogP
Strain ΔE
26.6 kcal/mol
SASA buried
72%
Lipo contact
81% BSA apolar/total
SASA unbound
767 Ų
Apolar buried
445 Ų

Interaction summary

HB 2 HY 24 PI 3 CLASH 6
Final rank2.243Score-24.422
Inter norm-0.631Intra norm-0.047
Top1000noExcludedno
Contacts16H-bonds2
Artifact reasongeometry warning; 16 clashes; 7 protein contact clashes; moderate strain Δ 26.6
Residues
ASP116 CYS52 GLU18 GLY112 GLY13 GLY49 ILE106 ILE339 LEU17 MET113 SER109 SER14 THR335 TRP21 TYR110 VAL53

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 overlap11Native recall0.85
Jaccard0.61RMSD-
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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
669 2.242959162236587 -0.630998 -24.4217 2 16 11 0.85 - - no Current
658 2.348686823393062 -1.02818 -37.7301 4 16 0 0.00 - - no Open
666 2.6812968608128886 -0.619624 -21.6677 4 24 0 0.00 - - no Open
647 2.681307657453689 -0.654945 -24.3869 1 15 0 0.00 - - no Open
669 2.976194309743088 -0.539639 -21.2114 3 15 0 0.00 - - no Open
677 3.703549043285708 -0.923151 -32.1561 6 23 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 -24.422kcal/mol
Ligand efficiency (LE) -0.6784kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.895
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 518.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.37
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 26.56kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 38.93kcal/mol
Minimised FF energy 12.37kcal/mol

SASA & burial

✓ computed
SASA (unbound) 766.7Ų
Total solvent-accessible surface area of free ligand
BSA total 549.4Ų
Buried surface area upon binding
BSA apolar 444.9Ų
Hydrophobic contacts buried
BSA polar 104.5Ų
Polar contacts buried
Fraction buried 71.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3228.2Ų
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 1476.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)