FAIRMol

MK217

Pose ID 9878 Compound 135 Pose 392

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T15
T. brucei TR (Dimer cleft site) T. brucei Dimer cleft site
Ligand MK217
PDB9IFF

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 high Native mixed SASA done
Strain ΔE
22.8 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.54, Jaccard 0.39
Burial
73%
Hydrophobic fit
82%
Reason: no major geometry red flags detected
2 protein-contact clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.736 kcal/mol/HA) ✓ Good fit quality (FQ -7.10) ✓ Strong H-bond network (10 bonds) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ High strain energy (22.8 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (12)
Score
-22.088
kcal/mol
LE
-0.736
kcal/mol/HA
Fit Quality
-7.10
FQ (Leeson)
HAC
30
heavy atoms
MW
427
Da
LogP
4.61
cLogP
Strain ΔE
22.8 kcal/mol
SASA buried
73%
Lipo contact
82% BSA apolar/total
SASA unbound
696 Ų
Apolar buried
414 Ų

Interaction summary

HB 10 HY 16 PI 0 CLASH 2

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

Final rank4.657Score-22.088
Inter norm-0.889Intra norm0.153
Top1000noExcludedno
Contacts12H-bonds10
Artifact reasongeometry warning; 12 clashes; 3 protein clashes; moderate strain Δ 22.8
Residues
ALA209 ALA244 ARG74 ASN245 ASP71 GLY246 GLY85 LEU73 LYS211 MET70 TYR408 VAL88

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name9IFFContacts13
PoseOpen native poseHB0
IFP residues
ALA209 ARG74 ASN208 GLY214 GLY215 GLY85 LEU73 LYS211 MET70 PHE83 PRO212 PRO213 VAL88
Current overlap7Native recall0.54
Jaccard0.39RMSD-
HB strict0Strict recall-
HB same residue+role0HB role recall-
HB same residue0HB residue recall-

Protein summary

489 residues
Protein targetT15Atoms7420
Residues489Chains1
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:264; MET:204

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
338 1.1547768705232146 -0.933689 -25.1453 11 21 0 0.00 - - no Open
327 2.1668862228610912 -1.02891 -28.665 4 19 0 0.00 - - no Open
287 2.8559837909450883 -0.774378 -21.259 5 16 0 0.00 - - no Open
208 3.7289272371499456 -1.00251 -27.321 7 17 0 0.00 - - no Open
311 3.9191241786417086 -0.845928 -24.1464 8 17 0 0.00 - - no Open
362 4.234418293304888 -0.826607 -20.814 7 14 0 0.00 - - no Open
392 4.656774794069281 -0.888962 -22.0884 10 12 7 0.54 - - no Current
235 4.770647973411289 -1.11974 -29.3968 11 18 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 -22.088kcal/mol
Ligand efficiency (LE) -0.7363kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.102
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 426.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.61
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 22.80kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 57.31kcal/mol
Minimised FF energy 34.51kcal/mol

SASA & burial

✓ computed
SASA (unbound) 695.5Ų
Total solvent-accessible surface area of free ligand
BSA total 504.7Ų
Buried surface area upon binding
BSA apolar 413.7Ų
Hydrophobic contacts buried
BSA polar 91.1Ų
Polar contacts buried
Fraction buried 72.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 82.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -3049.1Ų
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 4005.2Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1526.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)