FAIRMol

OHD_TB2022_32

Pose ID 11581 Compound 555 Pose 60

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 OHD_TB2022_32
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 moderate Geometry low Native strong SASA done
Strain ΔE
100.7 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.69, Jaccard 0.50
Burial
68%
Hydrophobic fit
43%
Reason: strain 100.7 kcal/mol
strain ΔE 100.7 kcal/mol 2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Acceptable LE (-0.278 kcal/mol/HA) ✓ Good fit quality (FQ -2.62) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (68% SASA buried) ✗ Extreme strain energy (100.7 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (5)
Score
-7.777
kcal/mol
LE
-0.278
kcal/mol/HA
Fit Quality
-2.62
FQ (Leeson)
HAC
28
heavy atoms
MW
443
Da
LogP
-2.27
cLogP
Strain ΔE
100.7 kcal/mol
SASA buried
68%
Lipo contact
43% BSA apolar/total
SASA unbound
628 Ų
Apolar buried
183 Ų

Interaction summary

HB 11 HY 8 PI 1 CLASH 2

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 rank3.663Score-7.777
Inter norm-0.755Intra norm0.477
Top1000noExcludedno
Contacts14H-bonds11
Artifact reasongeometry warning; 5 clashes; 2 protein clashes; high normalized intra; high strain Δ 100.7
Residues
CYS52 GLU18 GLY13 GLY49 ILE106 ILE339 LEU17 MET113 SER109 SER14 THR335 TRP21 TYR110 VAL53

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
Jaccard0.50RMSD-
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
42 0.8989299752623506 -1.26856 -30.9822 4 12 0 0.00 - - no Open
71 1.5801052430540334 -1.01131 -29.2316 16 18 0 0.00 - - no Open
70 1.60132418319177 -0.936258 -26.4623 8 20 0 0.00 - - no Open
64 2.0505650579125 -1.23076 -23.3015 11 18 0 0.00 - - no Open
63 2.3502887813057387 -1.0428 -13.8344 9 20 0 0.00 - - no Open
81 3.240535762876825 -0.962735 -16.0402 11 18 0 0.00 - - no Open
60 3.6631475468222012 -0.754843 -7.77728 11 14 9 0.69 - - no Current
56 3.675610673525081 -0.999244 -14.1763 16 16 0 0.00 - - no Open
75 3.7683605221794902 -0.958447 -21.714 10 20 0 0.00 - - no Open
43 4.172514585544348 -1.49933 -37.9089 16 21 0 0.00 - - no Open
70 4.45776064754174 -0.739553 -22.7032 10 12 0 0.00 - - no Open
56 4.64794465457073 -1.04399 -18.6626 15 15 0 0.00 - - no Open
41 5.071666184180568 -0.896731 -29.8785 16 16 0 0.00 - - no Open
26 5.1433613498224355 -0.882633 -21.1222 16 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 -7.777kcal/mol
Ligand efficiency (LE) -0.2778kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -2.622
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 443.2Da
Lipinski: ≤ 500 Da
LogP (cLogP) -2.27
Lipinski: ≤ 5
Rotatable bonds 14

Conformational strain (MMFF94s)

Strain energy (ΔE) 100.70kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 18.94kcal/mol
Minimised FF energy -81.76kcal/mol

SASA & burial

✓ computed
SASA (unbound) 628.2Ų
Total solvent-accessible surface area of free ligand
BSA total 425.9Ų
Buried surface area upon binding
BSA apolar 182.8Ų
Hydrophobic contacts buried
BSA polar 243.1Ų
Polar contacts buried
Fraction buried 67.8%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 42.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2923.8Ų
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 1471.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)