FAIRMol

Z275025498

Pose ID 11922 Compound 760 Pose 401

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 Z275025498
PDB6RB5

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
30.3 kcal/mol
Protein clashes
0
Internal clashes
9
Native overlap
contact recall 0.69, Jaccard 0.56
Burial
69%
Hydrophobic fit
60%
Reason: 9 internal clashes
9 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.874 kcal/mol/HA) ✓ Good fit quality (FQ -8.25) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (60%) ✗ Very high strain energy (30.3 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-24.463
kcal/mol
LE
-0.874
kcal/mol/HA
Fit Quality
-8.25
FQ (Leeson)
HAC
28
heavy atoms
MW
430
Da
LogP
4.21
cLogP
Strain ΔE
30.3 kcal/mol
SASA buried
69%
Lipo contact
60% BSA apolar/total
SASA unbound
649 Ų
Apolar buried
271 Ų

Interaction summary

HB 10 HY 24 PI 2 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 rank2.828Score-24.463
Inter norm-0.752Intra norm-0.122
Top1000noExcludedno
Contacts12H-bonds10
Artifact reasongeometry warning; 9 clashes; 2 protein clashes; high strain Δ 30.3
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
381 0.4678678754036258 -1.1526 -33.9568 4 15 0 0.00 - - no Open
360 0.5197055751298865 -0.90829 -27.5829 3 17 0 0.00 - - no Open
447 1.219696433124539 -0.981399 -29.5048 3 18 0 0.00 - - no Open
355 1.3063524923317955 -1.04791 -30.2735 11 20 0 0.00 - - no Open
408 1.743798155616244 -1.05333 -31.9361 3 16 0 0.00 - - no Open
329 1.7650189558589326 -1.04283 -32.4787 6 12 0 0.00 - - no Open
379 1.969342891855111 -0.889133 -24.5333 2 11 0 0.00 - - no Open
325 2.125064930305446 -1.21138 -36.9499 9 20 0 0.00 - - no Open
370 2.6577378078182576 -0.783465 -23.9328 5 9 0 0.00 - - no Open
401 2.8276500106851037 -0.751507 -24.4635 10 12 9 0.69 - - no Current
339 3.4270672992810502 -0.865213 -25.4592 9 17 0 0.00 - - no Open
388 3.555555808287048 -0.931199 -26.8835 15 17 0 0.00 - - no Open
360 3.9357191430534906 -1.02887 -25.0561 14 17 0 0.00 - - no Open
385 4.556515282102343 -0.781229 -24.3789 8 11 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 -24.463kcal/mol
Ligand efficiency (LE) -0.8737kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.248
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 429.9Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.21
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 30.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 52.02kcal/mol
Minimised FF energy 21.76kcal/mol

SASA & burial

✓ computed
SASA (unbound) 649.0Ų
Total solvent-accessible surface area of free ligand
BSA total 450.4Ų
Buried surface area upon binding
BSA apolar 270.7Ų
Hydrophobic contacts buried
BSA polar 179.7Ų
Polar contacts buried
Fraction buried 69.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 60.1%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2979.6Ų
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 1545.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)