FAIRMol

OHD_MAC_3

Pose ID 9152 Compound 3343 Pose 344

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 OHD_MAC_3
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
61.3 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.60, Jaccard 0.38, H-bond role recall 0.60
Burial
79%
Hydrophobic fit
78%
Reason: strain 61.3 kcal/mol
strain ΔE 61.3 kcal/mol 2 protein-contact clashes 100% of hydrophobic surface is solvent-exposed (25/25 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 ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.411 kcal/mol/HA) ✓ Good fit quality (FQ -4.21) ✓ Strong H-bond network (11 bonds) ✓ Deep burial (79% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Extreme strain energy (61.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-15.207
kcal/mol
LE
-0.411
kcal/mol/HA
Fit Quality
-4.21
FQ (Leeson)
HAC
37
heavy atoms
MW
498
Da
LogP
1.78
cLogP
Strain ΔE
61.3 kcal/mol
SASA buried
79%
Lipo contact
78% BSA apolar/total
SASA unbound
786 Ų
Apolar buried
489 Ų

Interaction summary

HB 11 HY 0 PI 0 CLASH 2 ⚠ Exposure 100%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
100% of hydrophobic surface is solvent-exposed (25/25 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 25 Buried (contacted) 0 Exposed 25 LogP 1.78 H-bonds 11
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (4/6 atoms exposed)phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank5.514Score-15.207
Inter norm-0.838Intra norm0.426
Top1000noExcludedno
Contacts18H-bonds11
Artifact reasongeometry warning; 17 clashes; 3 protein clashes; high raw intra; high strain Δ 61.2
Residues
ARG22 ARG242 ARG337 ARG50 ASN20 ASP243 ASP385 ASP44 ASP47 GLU384 LEU339 PHE383 SER282 THR21 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 overlap9Native recall0.60
Jaccard0.38RMSD-
HB strict2Strict recall0.33
HB same residue+role3HB role recall0.60
HB same residue3HB residue recall0.60

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
353 3.6605677573847943 -0.763663 -12.0365 6 17 0 0.00 0.00 - no Open
353 4.39998033803745 -0.769384 -12.8873 11 17 0 0.00 0.00 - no Open
313 4.758383907657859 -0.85718 -25.4287 15 20 0 0.00 0.00 - no Open
315 5.394403083352138 -0.852659 -19.6874 16 23 0 0.00 0.00 - no Open
344 5.514129269968441 -0.838101 -15.2066 11 18 9 0.60 0.60 - 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 -15.207kcal/mol
Ligand efficiency (LE) -0.4110kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -4.208
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 37HA

Physicochemical properties

Molecular weight 497.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.78
Lipinski: ≤ 5
Rotatable bonds 11

Conformational strain (MMFF94s)

Strain energy (ΔE) 61.26kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 128.71kcal/mol
Minimised FF energy 67.46kcal/mol

SASA & burial

✓ computed
SASA (unbound) 785.7Ų
Total solvent-accessible surface area of free ligand
BSA total 623.8Ų
Buried surface area upon binding
BSA apolar 489.0Ų
Hydrophobic contacts buried
BSA polar 134.8Ų
Polar contacts buried
Fraction buried 79.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 78.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2558.1Ų
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 1393.3Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)