FAIRMol

Z1501485351

Pose ID 9271 Compound 538 Pose 463

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 Z1501485351
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 strong SASA done
Strain ΔE
38.6 kcal/mol
Protein clashes
0
Internal clashes
8
Native overlap
contact recall 0.60, Jaccard 0.39, H-bond role recall 0.20
Burial
85%
Hydrophobic fit
82%
Reason: 8 internal clashes
8 intramolecular clashes 44% of hydrophobic surface appears solvent-exposed (7/16 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Excellent LE (-1.074 kcal/mol/HA) ✓ Good fit quality (FQ -9.62) ✓ Good H-bonds (5 bonds) ✓ Deep burial (85% SASA buried) ✓ Lipophilic contacts well-matched (82%) ✗ Very high strain energy (38.6 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (8)
Score
-25.771
kcal/mol
LE
-1.074
kcal/mol/HA
Fit Quality
-9.62
FQ (Leeson)
HAC
24
heavy atoms
MW
366
Da
LogP
2.66
cLogP
Strain ΔE
38.6 kcal/mol
SASA buried
85%
Lipo contact
82% BSA apolar/total
SASA unbound
586 Ų
Apolar buried
408 Ų

Interaction summary

HB 5 HY 13 PI 0 CLASH 0 ⚠ Exposure 43%
⚠️Partial hydrophobic solvent exposure
44% of hydrophobic surface appears solvent-exposed (7/16 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 16 Buried (contacted) 9 Exposed 7 LogP 2.66 H-bonds 5
Exposed fragments: phenyl (6/6 atoms exposed)aliphatic chain/group (1 atom exposed)
Final rank2.032Score-25.771
Inter norm-0.918Intra norm-0.156
Top1000noExcludedno
Contacts17H-bonds5
Artifact reasongeometry warning; 8 clashes; 1 protein clash; high strain Δ 38.6
Residues
ALA283 ARG22 ARG50 ASN20 ASP385 ASP44 ASP47 CYS26 GLN341 GLU384 LEU25 LEU339 LEU382 PRO340 SER282 THR21 THR285

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
Jaccard0.39RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
HB same residue1HB residue recall0.20

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.

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
462 1.733065083563356 -1.43117 -33.8453 11 21 0 0.00 0.00 - no Open
463 2.031975684198089 -0.917797 -25.7708 5 17 9 0.60 0.20 - no Current
508 3.0708126913103095 -1.12107 -29.4097 4 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 -25.771kcal/mol
Ligand efficiency (LE) -1.0738kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -9.623
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 24HA

Physicochemical properties

Molecular weight 365.8Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.66
Lipinski: ≤ 5
Rotatable bonds 4

Conformational strain (MMFF94s)

Strain energy (ΔE) 38.62kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 5.47kcal/mol
Minimised FF energy -33.15kcal/mol

SASA & burial

✓ computed
SASA (unbound) 585.7Ų
Total solvent-accessible surface area of free ligand
BSA total 500.0Ų
Buried surface area upon binding
BSA apolar 408.1Ų
Hydrophobic contacts buried
BSA polar 91.9Ų
Polar contacts buried
Fraction buried 85.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 81.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2434.5Ų
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 1389.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)