FAIRMol

Z56845221

Pose ID 12184 Compound 1656 Pose 663

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 Z56845221
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 and worth follow-up
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
13.6 kcal/mol
Protein clashes
0
Internal clashes
3
Native overlap
contact recall 0.54, Jaccard 0.37
Burial
73%
Hydrophobic fit
52%
Reason: no major geometry red flags detected
3 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Daphnia EC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Algae IC₅₀
Cat. 2 — Toxic (1–10 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Promising Reasonable quality metrics. Warrants further investigation.
✓ Excellent LE (-1.159 kcal/mol/HA) ✓ Good fit quality (FQ -9.50) ✓ Deep burial (73% SASA buried) ✗ Moderate strain (13.6 kcal/mol) ✗ Geometry warnings
Score
-22.021
kcal/mol
LE
-1.159
kcal/mol/HA
Fit Quality
-9.50
FQ (Leeson)
HAC
19
heavy atoms
MW
308
Da
LogP
3.86
cLogP
Final rank
0.6104
rank score
Inter norm
-1.171
normalised
Contacts
13
H-bonds 5
Strain ΔE
13.6 kcal/mol
SASA buried
73%
Lipo contact
52% BSA apolar/total
SASA unbound
521 Ų
Apolar buried
199 Ų

Interaction summary

HBD 1 HBA 1 PC 1 HY 7 PI 3 CLASH 0

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: permissive. Residues: 2.

PC · Polar contacts (possible, no H geometry)

HBD?/HBA? — heavy-atom distance only, H geometry unavailable. May be real H-bonds.

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.

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: permissive.
Name6RB5Contacts13
PoseOpen native poseHB0
IFP residues
ASP116 GLU18 GLY112 ILE106 LEU17 MET113 SER109 THR117 THR335 TRP21 TYR110 VAL53 VAL58
Current overlap7Native recall0.54
Jaccard0.37RMSD-
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
666 -0.8794313331773516 -1.59413 -29.1739 4 13 0 0.00 - - no Open
661 0.41553730051275123 -1.39667 -25.7584 3 11 0 0.00 - - no Open
663 0.6103829203165203 -1.17145 -22.0213 5 13 7 0.54 - - no Current
663 1.2061701241431626 -1.35954 -25.9347 6 15 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 -22.021kcal/mol
Ligand efficiency (LE) -1.1590kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.500
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 19HA

Physicochemical properties

Molecular weight 308.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.86
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 13.64kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 24.44kcal/mol
Minimised FF energy 10.80kcal/mol

SASA & burial

✓ computed
SASA (unbound) 520.8Ų
Total solvent-accessible surface area of free ligand
BSA total 380.9Ų
Buried surface area upon binding
BSA apolar 199.4Ų
Hydrophobic contacts buried
BSA polar 181.5Ų
Polar contacts buried
Fraction buried 73.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 52.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2948.0Ų
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 1466.5Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)