FAIRMol

Z56887099

Pose ID 9319 Compound 2932 Pose 511

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 Z56887099
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 mixed SASA done
Strain ΔE
48.2 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.53, Jaccard 0.44, H-bond role recall 0.00
Burial
59%
Hydrophobic fit
76%
Reason: strain 48.2 kcal/mol
strain ΔE 48.2 kcal/mol 1 protein-contact clashes 73% of hydrophobic surface is solvent-exposed (19/26 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 (-0.507 kcal/mol/HA) ✓ Good fit quality (FQ -5.03) ✓ Good H-bonds (4 bonds) ✓ Good burial (59% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Extreme strain energy (48.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (18)
Score
-16.722
kcal/mol
LE
-0.507
kcal/mol/HA
Fit Quality
-5.03
FQ (Leeson)
HAC
33
heavy atoms
MW
461
Da
LogP
5.19
cLogP
Strain ΔE
48.2 kcal/mol
SASA buried
59%
Lipo contact
76% BSA apolar/total
SASA unbound
769 Ų
Apolar buried
345 Ų

Interaction summary

HB 4 HY 2 PI 0 CLASH 1 ⚠ Exposure 73%

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

🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
73% of hydrophobic surface is solvent-exposed (19/26 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 26 Buried (contacted) 7 Exposed 19 LogP 5.19 H-bonds 4
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank3.312Score-16.722
Inter norm-0.684Intra norm0.177
Top1000noExcludedno
Contacts11H-bonds4
Artifact reasongeometry warning; 18 clashes; 1 protein clash; high strain Δ 48.2
Residues
ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 MET386 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
Jaccard0.44RMSD-
HB strict0Strict recall0.00
HB same residue+role0HB role recall0.00
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
525 2.0215541752592547 -0.724726 -19.2697 5 15 0 0.00 0.00 - no Open
506 3.138918837258046 -0.785555 -22.7184 3 16 0 0.00 0.00 - no Open
511 3.3119931433194325 -0.683503 -16.7223 4 11 8 0.53 0.00 - no Current
491 3.385380428621768 -0.934817 -25.8045 5 18 0 0.00 0.00 - no Open
514 4.458260016453443 -0.731588 -23.1817 7 14 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 -16.722kcal/mol
Ligand efficiency (LE) -0.5067kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.028
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 33HA

Physicochemical properties

Molecular weight 460.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.19
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 48.25kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 102.19kcal/mol
Minimised FF energy 53.95kcal/mol

SASA & burial

✓ computed
SASA (unbound) 768.9Ų
Total solvent-accessible surface area of free ligand
BSA total 456.5Ų
Buried surface area upon binding
BSA apolar 345.4Ų
Hydrophobic contacts buried
BSA polar 111.1Ų
Polar contacts buried
Fraction buried 59.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2569.5Ų
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 1418.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)