FAIRMol

MK136

Pose ID 2954 Compound 1334 Pose 244

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T05
L. major PTR1 L. major
Ligand MK136
PDB7PXX

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
21.2 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.71, Jaccard 0.60, H-bond role recall 0.33
Burial
78%
Hydrophobic fit
85%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Daphnia EC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Algae IC₅₀
Cat. 1 — Very toxic (≤1 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Risk
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-0.818 kcal/mol/HA) ✓ Good fit quality (FQ -7.89) ✓ Good H-bonds (4 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ High strain energy (21.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (11)
Score
-24.534
kcal/mol
LE
-0.818
kcal/mol/HA
Fit Quality
-7.89
FQ (Leeson)
HAC
30
heavy atoms
MW
409
Da
LogP
4.98
cLogP
Final rank
3.5243
rank score
Inter norm
-0.958
normalised
Contacts
15
H-bonds 5
Strain ΔE
21.2 kcal/mol
SASA buried
78%
Lipo contact
85% BSA apolar/total
SASA unbound
701 Ų
Apolar buried
469 Ų

Interaction summary

HBD 1 HBA 3 PC 1 HY 6 PI 3 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PC · Polar contacts (possible, no H geometry)

HBD?/HBA? — heavy-atom distance only, H geometry unavailable. May be real H-bonds.

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.
NameligandContacts17
PoseOpen native poseHB0
IFP residues
ARG17 GLY225 HIS241 LEU188 LEU226 LEU229 LYS198 MET233 NDP302 PHE113 PRO115 SER111 SER227 TYR191 TYR194 VAL230 ARG287
Current overlap12Native recall0.71
Jaccard0.60RMSD-
HB strict2Strict recall0.29
HB same residue+role2HB role recall0.33
HB same residue3HB residue recall0.60

Protein summary

274 residues
Protein targetT05Atoms4108
Residues274Chains2
Residue summaryLEU:494; ALA:421; ARG:384; VAL:368; THR:295; TYR:231; SER:198; PRO:196; ILE:190; LYS:176; ASN:154; GLU:150; GLY:126; PHE:120; HIS:119; ASP:108

Receptor context

1 kept / 0 excluded
Receptor context filtering: interactions and SASA are computed against protein atoms plus allowed cofactors/ions. Native ligand-like HETATM partners are excluded from scoring.
Kept context 1 Excluded HETATM 0
Kept cofactors / ions
A:NDP302

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
252 1.8484657410477565 -1.02406 -26.447 4 16 0 0.00 0.00 - no Open
306 2.7587280890065067 -1.0108 -25.6865 4 15 0 0.00 0.00 - no Open
243 2.771996727510083 -0.760311 -11.5868 5 19 0 0.00 0.00 - no Open
289 3.025607982132919 -0.867396 -23.1355 8 18 0 0.00 0.00 - no Open
244 3.5242873499806526 -0.958256 -24.534 5 15 12 0.71 0.33 - 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 -24.534kcal/mol
Ligand efficiency (LE) -0.8178kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.889
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 409.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.98
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 21.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 62.39kcal/mol
Minimised FF energy 41.14kcal/mol

SASA & burial

✓ computed
SASA (unbound) 700.7Ų
Total solvent-accessible surface area of free ligand
BSA total 550.2Ų
Buried surface area upon binding
BSA apolar 468.7Ų
Hydrophobic contacts buried
BSA polar 81.5Ų
Polar contacts buried
Fraction buried 78.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -1745.2Ų
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 2179.4Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1038.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)