FAIRMol

Z49620451

Pose ID 11995 Compound 479 Pose 474

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 Z49620451
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
58.5 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.69, Jaccard 0.47
Burial
74%
Hydrophobic fit
83%
Reason: strain 58.5 kcal/mol
strain ΔE 58.5 kcal/mol 1 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.607 kcal/mol/HA) ✓ Good fit quality (FQ -5.66) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (83%) ✗ Extreme strain energy (58.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (15)
Score
-16.384
kcal/mol
LE
-0.607
kcal/mol/HA
Fit Quality
-5.66
FQ (Leeson)
HAC
27
heavy atoms
MW
360
Da
LogP
3.51
cLogP
Strain ΔE
58.5 kcal/mol
SASA buried
74%
Lipo contact
83% BSA apolar/total
SASA unbound
600 Ų
Apolar buried
372 Ų

Interaction summary

HB 6 HY 23 PI 3 CLASH 1
Final rank2.755Score-16.384
Inter norm-0.871Intra norm0.264
Top1000noExcludedno
Contacts15H-bonds6
Artifact reasongeometry warning; 15 clashes; 1 protein clash; high strain Δ 45.6
Residues
CYS52 GLU18 GLY13 GLY49 GLY50 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 overlap9Native recall0.69
Jaccard0.47RMSD-
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
419 0.7601486257451542 -1.40602 -42.0237 11 15 0 0.00 - - no Open
453 2.1017127720934683 -0.978924 -23.5299 4 18 0 0.00 - - no Open
459 2.1985615726132846 -0.716795 -20.6273 6 12 0 0.00 - - no Open
498 2.7548777503622417 -0.986708 -29.2004 7 17 0 0.00 - - no Open
474 2.7551494810251014 -0.871048 -16.3839 6 15 9 0.69 - - no Current
493 2.9897441915583345 -0.968749 -29.3933 5 17 0 0.00 - - no Open
430 3.4369798200375854 -1.33416 -37.134 10 17 0 0.00 - - no Open
449 3.952825963730769 -1.23111 -29.9411 14 18 0 0.00 - - no Open
447 5.221684895759614 -0.982443 -28.6458 7 14 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 -16.384kcal/mol
Ligand efficiency (LE) -0.6068kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.661
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 360.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.51
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 58.52kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 153.69kcal/mol
Minimised FF energy 95.17kcal/mol

SASA & burial

✓ computed
SASA (unbound) 600.0Ų
Total solvent-accessible surface area of free ligand
BSA total 446.8Ų
Buried surface area upon binding
BSA apolar 372.3Ų
Hydrophobic contacts buried
BSA polar 74.5Ų
Polar contacts buried
Fraction buried 74.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 83.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3082.8Ų
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 1466.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)