FAIRMol

MK179

Pose ID 7676 Compound 234 Pose 224

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T12
T. brucei R5P T. brucei
Ligand MK179
PDB6FXS

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
48.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.94, Jaccard 0.79, H-bond role recall 0.50
Burial
78%
Hydrophobic fit
57%
Reason: strain 48.2 kcal/mol
strain ΔE 48.2 kcal/mol 2 protein-contact clashes
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.919 kcal/mol/HA) ✓ Good fit quality (FQ -8.87) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (78% SASA buried) ✗ Extreme strain energy (48.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-27.583
kcal/mol
LE
-0.919
kcal/mol/HA
Fit Quality
-8.87
FQ (Leeson)
HAC
30
heavy atoms
MW
458
Da
LogP
2.66
cLogP
Strain ΔE
48.2 kcal/mol
SASA buried
78%
Lipo contact
57% BSA apolar/total
SASA unbound
650 Ų
Apolar buried
288 Ų

Interaction summary

HB 9 HY 12 PI 3 CLASH 2
Final rank2.717Score-27.583
Inter norm-1.022Intra norm0.102
Top1000noExcludedno
Contacts18H-bonds9
Artifact reasongeometry warning; 12 clashes; 1 protein clash; high strain Δ 48.1
Residues
ARG140 ARG144 ASN106 HIS105 HIS141 MET101 TYR97 ARG116 ARG46 ASP13 CYS72 GLY73 GLY77 HIS14 ILE15 ILE76 SER74 TYR49

Protein summary

302 residues
Protein targetT12Atoms4598
Residues302Chains2
Residue summaryARG:576; ILE:456; VAL:448; GLU:360; ALA:340; LEU:304; TYR:252; HIS:204; PRO:196; THR:196; GLY:182; LYS:176; ASP:168; PHE:160; MET:153; SER:121

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:CSD72

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXSContacts16
PoseOpen native poseHB0
IFP residues
ARG140 ARG144 ASN106 HIS105 HIS141 ARG46 ASP13 CYS72 GLY73 GLY75 GLY77 HIS14 ILE15 ILE76 SER74 TYR49
Current overlap15Native recall0.94
Jaccard0.79RMSD-
HB strict5Strict recall0.42
HB same residue+role5HB role recall0.50
HB same residue6HB residue recall0.60

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
258 0.25042243857344604 -1.14891 -31.0205 5 13 0 0.00 0.00 - no Open
264 1.0927050169268024 -1.00795 -24.7925 4 14 0 0.00 0.00 - no Open
235 1.1073660704846975 -0.900181 -23.0605 5 17 0 0.00 0.00 - no Open
257 1.107384658545134 -0.819468 -19.7407 2 17 0 0.00 0.00 - no Open
313 1.3452488083914984 -0.690473 -17.5537 4 16 0 0.00 0.00 - no Open
252 1.4292786430260862 -0.917081 -25.3234 6 21 0 0.00 0.00 - no Open
330 1.622607140224942 -0.920565 -25.7973 2 18 0 0.00 0.00 - no Open
281 1.8373311043657956 -0.808595 -21.8267 3 15 0 0.00 0.00 - no Open
206 1.8644199550012546 -0.798056 -18.2624 8 14 4 0.25 0.20 - no Open
361 2.311042942916434 -0.848092 -25.1719 4 12 0 0.00 0.00 - no Open
261 2.5727308749693383 -0.803338 -20.2039 2 12 0 0.00 0.00 - no Open
224 2.7169060620044525 -1.02158 -27.5832 9 18 15 0.94 0.50 - no Current
234 3.995775267533372 -1.22318 -34.5475 13 21 0 0.00 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 -27.583kcal/mol
Ligand efficiency (LE) -0.9194kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.869
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 457.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.66
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 48.15kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 168.84kcal/mol
Minimised FF energy 120.69kcal/mol

SASA & burial

✓ computed
SASA (unbound) 650.3Ų
Total solvent-accessible surface area of free ligand
BSA total 506.7Ų
Buried surface area upon binding
BSA apolar 287.6Ų
Hydrophobic contacts buried
BSA polar 219.1Ų
Polar contacts buried
Fraction buried 77.9%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 56.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2108.8Ų
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 2454.8Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 771.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)