FAIRMol

MK132

Pose ID 9098 Compound 4171 Pose 290

DB fairmolDocking pose analysis is being read from this database.
Molecular metrics status: done
RDKit SASA-based burial metrics are cached.
SASA cached
T14
T. brucei ODC (G418 binding site) T. brucei G418 binding site
Ligand MK132
PDB1NJJ

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
72.5 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.60, Jaccard 0.43, H-bond role recall 0.40
Burial
80%
Hydrophobic fit
70%
Reason: 10 internal clashes, strain 72.5 kcal/mol
strain ΔE 72.5 kcal/mol 10 intramolecular clashes 59% of hydrophobic surface appears solvent-exposed (10/17 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.852 kcal/mol/HA) ✓ Good fit quality (FQ -8.13) ✓ Strong H-bond network (12 bonds) ✓ Deep burial (80% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ Extreme strain energy (72.5 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-24.701
kcal/mol
LE
-0.852
kcal/mol/HA
Fit Quality
-8.13
FQ (Leeson)
HAC
29
heavy atoms
MW
403
Da
LogP
0.16
cLogP
Strain ΔE
72.5 kcal/mol
SASA buried
80%
Lipo contact
70% BSA apolar/total
SASA unbound
652 Ų
Apolar buried
367 Ų

Interaction summary

HB 12 HY 3 PI 0 CLASH 0 ⚠ Exposure 58%

HB · H-bonds

Mode: strict. Count shows atom-level H-bonds; unique residues in summary: 0.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

No clash · clashes detected for this pose.
⚠️Partial hydrophobic solvent exposure
59% of hydrophobic surface appears solvent-exposed (10/17 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 17 Buried (contacted) 7 Exposed 10 LogP 0.16 H-bonds 12
Exposed fragments: phenyl (4/5 atoms exposed)phenyl (3/5 atoms exposed)phenyl (4/6 atoms exposed)aliphatic chain/group (1 atom exposed)
Final rank3.059Score-24.701
Inter norm-0.807Intra norm-0.045
Top1000noExcludedno
Contacts15H-bonds12
Artifact reasongeometry warning; 10 clashes; 1 protein clash; high strain Δ 72.5
Residues
ARG22 ARG342 ASN20 ASP385 CYS26 GLN341 GLU343 GLU384 LEU25 LEU382 PHE284 PRO340 SER282 THR21 THR285

Native ligand reference

★ reference
Interaction fingerprint calculated directly from the uploaded native ligand without docking. Current H-bond mode: strict.
Name1NJJContacts15
PoseOpen native poseHB0
IFP residues
ARG22 ARG242 ARG337 ARG342 ASP243 ASP385 GLN341 GLU384 LEU25 LEU339 LEU382 PRO340 PRO344 SER282 THR241
Current overlap9Native recall0.60
Jaccard0.43RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

Protein summary

398 residues
Protein targetT14Atoms6140
Residues398Chains1
Residue summaryVAL:592; LEU:513; LYS:484; ARG:432; PHE:420; ILE:418; ASP:349; THR:322; TYR:315; PRO:308; GLU:301; ALA:290; SER:253; GLY:217; ASN:210; GLN:170

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:ORX602

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
290 3.0588632698614457 -0.807174 -24.7009 12 15 9 0.60 0.40 - 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 -24.701kcal/mol
Ligand efficiency (LE) -0.8518kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.131
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 403.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.16
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 72.48kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 115.22kcal/mol
Minimised FF energy 42.74kcal/mol

SASA & burial

✓ computed
SASA (unbound) 652.3Ų
Total solvent-accessible surface area of free ligand
BSA total 525.5Ų
Buried surface area upon binding
BSA apolar 367.4Ų
Hydrophobic contacts buried
BSA polar 158.1Ų
Polar contacts buried
Fraction buried 80.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 69.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2450.1Ų
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 3349.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1361.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)