FAIRMol

MK26

Pose ID 7016 Compound 465 Pose 242

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 MK26

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
47.1 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.83, Jaccard 0.65, H-bond role recall 0.60
Burial
83%
Hydrophobic fit
91%
Reason: strain 47.1 kcal/mol
strain ΔE 47.1 kcal/mol 2 protein-contact clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Cat. 3 — Harmful (10–100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Medium Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.587 kcal/mol/HA) ✓ Good fit quality (FQ -5.92) ✓ Deep burial (83% SASA buried) ✓ Lipophilic contacts well-matched (91%) ✗ Extreme strain energy (47.1 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-20.544
kcal/mol
LE
-0.587
kcal/mol/HA
Fit Quality
-5.92
FQ (Leeson)
HAC
35
heavy atoms
MW
503
Da
LogP
2.43
cLogP
Final rank
3.7121
rank score
Inter norm
-0.711
normalised
Contacts
20
H-bonds 3
Strain ΔE
47.1 kcal/mol
SASA buried
83%
Lipo contact
91% BSA apolar/total
SASA unbound
828 Ų
Apolar buried
630 Ų

Interaction summary

HBD 1 HBA 1 HY 12 PI 4 CLASH 2

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 2.

PI · π–π interactions

Native π–π recall is disabled because no explicit native π–π reference was stored.

HY · Hydrophobic contacts

CLASH · Clashes

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 overlap15Native recall0.83
Jaccard0.65RMSD-
HB strict3Strict recall0.60
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.75

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
319 2.6975914816310187 -0.730471 -21.6464 2 18 0 0.00 0.00 - no Open
283 3.0032633616001716 -0.679398 -20.8205 5 24 0 0.00 0.00 - no Open
379 3.3715312613135215 -0.712779 -20.093 5 19 0 0.00 0.00 - no Open
242 3.712098901868518 -0.710593 -20.5436 3 20 15 0.83 0.60 - no Current
282 6.178120509243062 -0.658338 -18.331 8 17 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 -20.544kcal/mol
Ligand efficiency (LE) -0.5870kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.920
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 35HA

Physicochemical properties

Molecular weight 502.7Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.43
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 47.13kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 108.87kcal/mol
Minimised FF energy 61.74kcal/mol

SASA & burial

✓ computed
SASA (unbound) 828.2Ų
Total solvent-accessible surface area of free ligand
BSA total 690.2Ų
Buried surface area upon binding
BSA apolar 630.0Ų
Hydrophobic contacts buried
BSA polar 60.2Ų
Polar contacts buried
Fraction buried 83.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.3%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2183.9Ų
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 918.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)