FAIRMol

MK212

Pose ID 6305 Compound 1432 Pose 209

DB SELECTIONDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T10
L. infantum R5P L. infantum
Ligand MK212

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
29.3 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.71, Jaccard 0.67, H-bond role recall 0.64
Burial
67%
Hydrophobic fit
73%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes 74% of hydrophobic surface is solvent-exposed (17/23 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.716 kcal/mol/HA) ✓ Good fit quality (FQ -6.91) ✓ Strong H-bond network (16 bonds) ✓ Deep burial (67% SASA buried) ✓ Lipophilic contacts well-matched (73%) ✗ High strain energy (29.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-21.481
kcal/mol
LE
-0.716
kcal/mol/HA
Fit Quality
-6.91
FQ (Leeson)
HAC
30
heavy atoms
MW
409
Da
LogP
3.80
cLogP
Strain ΔE
29.3 kcal/mol
SASA buried
67%
Lipo contact
73% BSA apolar/total
SASA unbound
659 Ų
Apolar buried
319 Ų

Interaction summary

HB 16 HY 0 PI 2 CLASH 6 ⚠ Exposure 73%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
74% of hydrophobic surface is solvent-exposed (17/23 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
Non-polar atoms 23 Buried (contacted) 6 Exposed 17 LogP 3.8 H-bonds 16
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)phenyl (2/5 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank4.563Score-21.481
Inter norm-0.927Intra norm0.211
Top1000noExcludedno
Contacts13H-bonds16
Artifact reasongeometry warning; 11 clashes; 2 protein clashes; moderate strain Δ 29.3
Residues
ALA15 ARG116 ARG140 ARG144 ASN106 GLY73 HIS105 HIS14 HIS141 LEU101 SER46 THR74 TYR49

Protein summary

155 residues
Protein targetT10Atoms4590
Residues155Chains1
Residue summaryILE:494; ARG:384; ALA:360; VAL:352; LEU:304; GLU:300; THR:280; MET:272; LYS:220; ASP:216; TYR:210; HIS:204; GLY:182; SER:176; GLN:170; ASN:140

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name6FXWContacts17
PoseOpen native poseHB0
IFP residues
ALA15 ARG116 ARG140 ARG144 ASN106 ASP13 CYS72 GLY73 GLY75 GLY77 HIS105 HIS14 HIS141 ILE76 LEU101 THR74 TYR49
Current overlap12Native recall0.71
Jaccard0.67RMSD-
HB strict8Strict recall0.62
HB same residue+role7HB role recall0.64
HB same residue7HB residue recall0.64

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

No hy · hydrophobic contacts detected for this pose.

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
260 0.84043620314604 -1.10857 -31.9296 5 19 0 0.00 0.00 - no Open
306 1.972989293392654 -0.793065 -22.1717 7 13 0 0.00 0.00 - no Open
307 2.5673629476245416 -0.750638 -17.4654 4 14 0 0.00 0.00 - no Open
241 3.185306295571 -0.90845 -22.6572 5 17 0 0.00 0.00 - no Open
317 3.4954594049915357 -0.67916 -18.4792 5 11 0 0.00 0.00 - no Open
322 4.004148964053278 -0.981845 -25.3934 5 11 0 0.00 0.00 - no Open
282 4.179828254498319 -0.959178 -22.083 11 17 0 0.00 0.00 - no Open
209 4.562618960339941 -0.927355 -21.4809 16 13 12 0.71 0.64 - no Current
230 4.730667432356591 -1.06365 -27.277 11 16 5 0.29 0.18 - 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 -21.481kcal/mol
Ligand efficiency (LE) -0.7160kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.907
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 409.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 3.80
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.27kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 35.61kcal/mol
Minimised FF energy 6.34kcal/mol

SASA & burial

✓ computed
SASA (unbound) 658.6Ų
Total solvent-accessible surface area of free ligand
BSA total 439.1Ų
Buried surface area upon binding
BSA apolar 319.2Ų
Hydrophobic contacts buried
BSA polar 119.8Ų
Polar contacts buried
Fraction buried 66.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 72.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2288.0Ų
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 2417.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 662.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)