FAIRMol

MK212

Pose ID 9114 Compound 1432 Pose 306

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 MK212
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
17.6 kcal/mol
Protein clashes
0
Internal clashes
10
Native overlap
contact recall 0.53, Jaccard 0.40, H-bond role recall 0.20
Burial
74%
Hydrophobic fit
84%
Reason: 10 internal clashes
10 intramolecular clashes 100% of hydrophobic surface is solvent-exposed (23/23 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 (-0.739 kcal/mol/HA) ✓ Good fit quality (FQ -7.13) ✓ Strong H-bond network (7 bonds) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (84%) ✗ Moderate strain (17.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-22.172
kcal/mol
LE
-0.739
kcal/mol/HA
Fit Quality
-7.13
FQ (Leeson)
HAC
30
heavy atoms
MW
409
Da
LogP
3.80
cLogP
Strain ΔE
17.6 kcal/mol
SASA buried
74%
Lipo contact
84% BSA apolar/total
SASA unbound
664 Ų
Apolar buried
415 Ų

Interaction summary

HB 7 HY 0 PI 0 CLASH 0 ⚠ Exposure 100%

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

No hy · hydrophobic contacts detected for this pose.

CLASH · Clashes

No clash · clashes detected for this pose.
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
100% of hydrophobic surface is solvent-exposed (23/23 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) 0 Exposed 23 LogP 3.8 H-bonds 7
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 (6 atoms exposed)
Final rank1.973Score-22.172
Inter norm-0.793Intra norm0.054
Top1000noExcludedno
Contacts13H-bonds7
Artifact reasongeometry warning; 10 clashes; 1 protein clash
Residues
ARG242 ARG337 ARG50 ASP243 ASP385 ASP47 GLU384 LEU339 LYS51 PHE383 SER282 THR241 VAL336

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 overlap8Native recall0.53
Jaccard0.40RMSD-
HB strict0Strict recall0.00
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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
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 8 0.53 0.20 - no Current
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 0 0.00 0.00 - no Open
230 4.730667432356591 -1.06365 -27.277 11 16 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 -22.172kcal/mol
Ligand efficiency (LE) -0.7391kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.129
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) 17.65kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 25.61kcal/mol
Minimised FF energy 7.96kcal/mol

SASA & burial

✓ computed
SASA (unbound) 664.2Ų
Total solvent-accessible surface area of free ligand
BSA total 493.4Ų
Buried surface area upon binding
BSA apolar 415.3Ų
Hydrophobic contacts buried
BSA polar 78.1Ų
Polar contacts buried
Fraction buried 74.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 84.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2487.6Ų
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 1391.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)