FAIRMol

MK219

Pose ID 7041 Compound 464 Pose 267

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T11
L. infantum SIR2 L. infantum
Ligand MK219

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Weak SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native strong SASA done
Strain ΔE
29.2 kcal/mol
Protein clashes
0
Internal clashes
11
Native overlap
contact recall 0.78, Jaccard 0.78, H-bond role recall 0.20
Burial
69%
Hydrophobic fit
80%
Reason: 11 internal clashes
11 intramolecular clashes
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.706 kcal/mol/HA) ✓ Good fit quality (FQ -6.94) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (80%) ✗ High strain energy (29.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-22.582
kcal/mol
LE
-0.706
kcal/mol/HA
Fit Quality
-6.94
FQ (Leeson)
HAC
32
heavy atoms
MW
438
Da
LogP
4.28
cLogP
Final rank
3.9900
rank score
Inter norm
-0.794
normalised
Contacts
14
H-bonds 3
Strain ΔE
29.2 kcal/mol
SASA buried
69%
Lipo contact
80% BSA apolar/total
SASA unbound
737 Ų
Apolar buried
408 Ų

Interaction summary

HBA 2 HY 6 PI 5 CLASH 0

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 1.

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: strict.
Name5OL0Contacts18
PoseOpen native poseHB0
IFP residues
ASN193 GLN220 GLU192 GLY191 HIS144 HIS222 ILE126 LEU194 LEU226 PHE189 PHE190 PHE199 PHE74 PRO223 THR71 VAL187 VAL188 VAL221
Current overlap14Native recall0.78
Jaccard0.78RMSD-
HB strict1Strict recall0.20
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.25

Protein summary

287 residues
Protein targetT11Atoms4391
Residues287Chains1
Residue summaryLEU:627; ARG:432; VAL:384; GLU:316; PHE:300; ILE:285; ALA:260; PRO:238; HIS:187; ASP:157; LYS:154; SER:154; THR:154; GLY:147; ASN:140; TYR:126

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
364 1.829900181254628 -0.719662 -18.3424 7 15 0 0.00 0.00 - no Open
265 2.026313243924789 -1.01026 -23.2914 7 17 0 0.00 0.00 - no Open
329 2.0373471110131636 -0.869732 -22.9516 3 18 0 0.00 0.00 - no Open
330 2.058710961639984 -0.909592 -23.8784 2 20 0 0.00 0.00 - no Open
273 2.6597483939163937 -1.27139 -31.6043 10 19 0 0.00 0.00 - no Open
339 2.6953150877472445 -0.847963 -22.7415 4 18 0 0.00 0.00 - no Open
216 3.6249745621726803 -1.05167 -23.8418 13 18 0 0.00 0.00 - no Open
267 3.990038112087562 -0.793892 -22.5817 3 14 14 0.78 0.20 - no Current
240 4.268181873602591 -0.970374 -21.8269 13 23 0 0.00 0.00 - no Open
313 4.372928356142067 -0.902686 -22.7305 9 19 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 -22.582kcal/mol
Ligand efficiency (LE) -0.7057kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.940
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 32HA

Physicochemical properties

Molecular weight 437.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.28
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.24kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 49.72kcal/mol
Minimised FF energy 20.48kcal/mol

SASA & burial

✓ computed
SASA (unbound) 736.6Ų
Total solvent-accessible surface area of free ligand
BSA total 510.3Ų
Buried surface area upon binding
BSA apolar 408.1Ų
Hydrophobic contacts buried
BSA polar 102.2Ų
Polar contacts buried
Fraction buried 69.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2054.0Ų
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 2380.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 944.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)