FAIRMol

MK178

Pose ID 11141 Compound 959 Pose 298

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T17
T. brucei TR (Doorstop site) T. brucei Doorstop site
Ligand MK178
PDB5S9T

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Weak or marginal quality
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
33.0 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.50, Jaccard 0.25, H-bond role recall 0.00
Burial
80%
Hydrophobic fit
80%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.838 kcal/mol/HA) ✓ Good fit quality (FQ -7.82) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ Very high strain energy (33.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-22.635
kcal/mol
LE
-0.838
kcal/mol/HA
Fit Quality
-7.82
FQ (Leeson)
HAC
27
heavy atoms
MW
383
Da
LogP
1.19
cLogP
Strain ΔE
33.0 kcal/mol
SASA buried
80%
Lipo contact
80% BSA apolar/total
SASA unbound
664 Ų
Apolar buried
422 Ų

Interaction summary

HB 7 HY 17 PI 2 CLASH 3
Final rank3.365Score-22.635
Inter norm-0.835Intra norm-0.004
Top1000noExcludedno
Contacts18H-bonds7
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; high strain Δ 33.0
Residues
ALA284 CYS375 GLY195 GLY197 GLY286 GLY376 HIS428 ILE199 ILE285 LEU332 LEU334 LEU377 PHE198 PHE230 SER200 SER364 THR374 VAL362

Protein summary

1033 residues
Protein targetT17Atoms15160
Residues1033Chains2
Residue summaryVAL:1536; LEU:1387; LYS:1386; ILE:1064; GLU:900; THR:868; ARG:816; PHE:800; ALA:780; ASN:700; PRO:686; GLY:672; SER:616; TYR:588; ASP:528; MET:408

Receptor context

2 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 2 Excluded HETATM 0
Kept cofactors / ions
A:FAD501 B:FAD501

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name5S9TContacts12
PoseOpen native poseHB0
IFP residues
ALA365 ARG228 ARG331 GLY229 LEU332 LEU334 MET333 PHE198 PHE230 SER364 THR374 VAL366
Current overlap6Native recall0.50
Jaccard0.25RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
HB same residue0HB residue recall0.00

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
263 1.592080145120779 -1.12639 -29.0563 5 19 0 0.00 0.00 - no Open
312 1.7090821578932922 -0.761878 -19.574 5 14 0 0.00 0.00 - no Open
233 2.362724664818737 -1.1807 -29.9558 6 23 0 0.00 0.00 - no Open
302 2.632828114530727 -0.9115 -23.8494 10 15 0 0.00 0.00 - no Open
316 2.6891181938524733 -1.00925 -27.9623 4 17 0 0.00 0.00 - no Open
198 3.3400353943595693 -1.09241 -29.9339 14 17 0 0.00 0.00 - no Open
298 3.364585239610429 -0.834586 -22.6348 7 18 6 0.50 0.00 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -22.635kcal/mol
Ligand efficiency (LE) -0.8383kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.821
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 383.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.19
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 32.98kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 128.46kcal/mol
Minimised FF energy 95.48kcal/mol

SASA & burial

✓ computed
SASA (unbound) 664.1Ų
Total solvent-accessible surface area of free ligand
BSA total 529.0Ų
Buried surface area upon binding
BSA apolar 422.4Ų
Hydrophobic contacts buried
BSA polar 106.6Ų
Polar contacts buried
Fraction buried 79.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 79.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -6515.9Ų
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 8063.1Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 2066.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)