FAIRMol

MK214

Pose ID 9116 Compound 58 Pose 308

DB SELECTIONDocking 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 MK214
PDB1NJJ

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 mixed SASA done
Strain ΔE
29.0 kcal/mol
Protein clashes
6
Internal clashes
6
Native overlap
contact recall 0.47, Jaccard 0.33, H-bond role recall 0.20
Burial
76%
Hydrophobic fit
85%
Reason: 6 internal clashes
6 protein-contact clashes 6 intramolecular clashes 91% of hydrophobic surface is solvent-exposed (21/23 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 (-0.779 kcal/mol/HA) ✓ Good fit quality (FQ -7.52) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (76% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ High strain energy (29.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-23.376
kcal/mol
LE
-0.779
kcal/mol/HA
Fit Quality
-7.52
FQ (Leeson)
HAC
30
heavy atoms
MW
409
Da
LogP
3.80
cLogP
Strain ΔE
29.0 kcal/mol
SASA buried
76%
Lipo contact
85% BSA apolar/total
SASA unbound
692 Ų
Apolar buried
444 Ų

Interaction summary

HB 9 HY 2 PI 0 CLASH 6 ⚠ Exposure 91%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
91% of hydrophobic surface is solvent-exposed (21/23 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) 2 Exposed 21 LogP 3.8 H-bonds 9
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)phenyl (2/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (4 atoms exposed)
Final rank4.813Score-23.376
Inter norm-0.827Intra norm0.048
Top1000noExcludedno
Contacts13H-bonds9
Artifact reasongeometry warning; 14 clashes; 2 protein clashes; moderate strain Δ 28.9
Residues
ARG337 ASP243 ASP385 GLU384 LEU339 MET386 PHE284 PHE383 SER282 THR241 THR285 VAL335 VAL336

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

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 overlap7Native recall0.47
Jaccard0.33RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue2HB residue recall0.40

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
336 0.7374817832746389 -0.865087 -22.2351 8 21 0 0.00 0.00 - no Open
243 1.0459251098796476 -0.915396 -25.193 3 17 0 0.00 0.00 - no Open
256 1.4927951929288439 -0.788125 -18.4186 5 19 0 0.00 0.00 - no Open
267 1.8444472646539805 -1.09624 -30.3951 10 15 0 0.00 0.00 - no Open
284 2.868455321715073 -0.953192 -26.8846 11 17 0 0.00 0.00 - no Open
211 3.0514253790960812 -0.93725 -24.9333 9 16 0 0.00 0.00 - no Open
324 3.3665093353059596 -1.03815 -28.1626 5 19 0 0.00 0.00 - no Open
205 4.25777316422757 -0.940866 -25.7758 8 19 0 0.00 0.00 - no Open
308 4.812997651394091 -0.82747 -23.3756 9 13 7 0.47 0.20 - 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 -23.376kcal/mol
Ligand efficiency (LE) -0.7792kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.516
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) 28.99kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 62.05kcal/mol
Minimised FF energy 33.06kcal/mol

SASA & burial

✓ computed
SASA (unbound) 692.2Ų
Total solvent-accessible surface area of free ligand
BSA total 523.2Ų
Buried surface area upon binding
BSA apolar 444.5Ų
Hydrophobic contacts buried
BSA polar 78.8Ų
Polar contacts buried
Fraction buried 75.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2562.2Ų
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 3349.0Ų
Non-polar SASA of receptor alone (VdW proxy, nonpolar atoms only)
Complex non-polar SASA 1383.2Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)