FAIRMol

MK2

Pose ID 7009 Compound 758 Pose 235

DB SELECTIONDocking 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 MK2

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 strong SASA done
Strain ΔE
31.9 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.72, Jaccard 0.57, H-bond role recall 0.60
Burial
88%
Hydrophobic fit
85%
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 (-0.619 kcal/mol/HA) ✓ Good fit quality (FQ -6.14) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (88% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Very high strain energy (31.9 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (13)
Score
-20.423
kcal/mol
LE
-0.619
kcal/mol/HA
Fit Quality
-6.14
FQ (Leeson)
HAC
33
heavy atoms
MW
455
Da
LogP
2.76
cLogP
Strain ΔE
31.9 kcal/mol
SASA buried
88%
Lipo contact
85% BSA apolar/total
SASA unbound
727 Ų
Apolar buried
548 Ų

Interaction summary

HB 6 HY 24 PI 1 CLASH 3
Final rank5.457Score-20.423
Inter norm-0.803Intra norm0.184
Top1000noExcludedno
Contacts18H-bonds6
Artifact reasongeometry warning; 13 clashes; 4 protein clashes; high strain Δ 31.9
Residues
ALA40 ASN125 GLN124 GLU192 GLY191 HIS144 HIS222 ILE126 LEU194 PHE189 PHE190 PHE51 PHE74 SER218 THR71 VAL187 VAL188 VAL221

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

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 overlap13Native recall0.72
Jaccard0.57RMSD-
HB strict3Strict recall0.60
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.75

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
296 1.2094497069229952 -0.798718 -24.0361 4 19 0 0.00 0.00 - no Open
246 1.5777109956035995 -1.02348 -27.0051 6 16 0 0.00 0.00 - no Open
217 2.907166553436376 -0.828931 -26.0142 6 18 0 0.00 0.00 - no Open
272 2.937604839504376 -0.709141 -16.628 8 14 0 0.00 0.00 - no Open
264 3.3766176770969594 -0.963848 -30.2461 8 16 0 0.00 0.00 - no Open
195 3.764082353800593 -0.885488 -30.0305 8 20 0 0.00 0.00 - no Open
253 5.228683162267013 -0.827143 -20.3337 9 19 0 0.00 0.00 - no Open
235 5.457047523773753 -0.802528 -20.4234 6 18 13 0.72 0.60 - 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 -20.423kcal/mol
Ligand efficiency (LE) -0.6189kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.141
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 454.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.76
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 31.91kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 54.16kcal/mol
Minimised FF energy 22.26kcal/mol

SASA & burial

✓ computed
SASA (unbound) 727.0Ų
Total solvent-accessible surface area of free ligand
BSA total 641.3Ų
Buried surface area upon binding
BSA apolar 547.7Ų
Hydrophobic contacts buried
BSA polar 93.5Ų
Polar contacts buried
Fraction buried 88.2%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2063.4Ų
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 929.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)