FAIRMol

Z49604116

Pose ID 9183 Compound 666 Pose 375

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 Z49604116
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
45.6 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.60, Jaccard 0.45, H-bond role recall 0.20
Burial
73%
Hydrophobic fit
68%
Reason: strain 45.6 kcal/mol
strain ΔE 45.6 kcal/mol 3 protein-contact clashes 3 intramolecular clashes 94% of hydrophobic surface is solvent-exposed (17/18 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 (-0.950 kcal/mol/HA) ✓ Good fit quality (FQ -8.97) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (73% SASA buried) ✓ Lipophilic contacts well-matched (68%) ✗ Extreme strain energy (45.6 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-26.611
kcal/mol
LE
-0.950
kcal/mol/HA
Fit Quality
-8.97
FQ (Leeson)
HAC
28
heavy atoms
MW
407
Da
LogP
1.60
cLogP
Strain ΔE
45.6 kcal/mol
SASA buried
73%
Lipo contact
68% BSA apolar/total
SASA unbound
643 Ų
Apolar buried
320 Ų

Interaction summary

HB 9 HY 1 PI 0 CLASH 3 ⚠ Exposure 94%

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
94% of hydrophobic surface is solvent-exposed (17/18 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 18 Buried (contacted) 1 Exposed 17 LogP 1.6 H-bonds 9
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (5 atoms exposed)
Final rank4.594Score-26.611
Inter norm-0.984Intra norm0.034
Top1000noExcludedno
Contacts14H-bonds9
Artifact reasongeometry warning; 9 clashes; 3 protein clashes; high strain Δ 45.6
Residues
ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 LEU382 MET386 PHE383 PRO338 SER282 THR241 VAL335 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 overlap9Native recall0.60
Jaccard0.45RMSD-
HB strict1Strict recall0.17
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
449 0.11150087522348105 -0.946596 -19.4906 5 19 0 0.00 0.00 - no Open
347 0.5722519427617813 -1.25157 -37.0671 11 18 0 0.00 0.00 - no Open
332 3.0831637024833767 -1.00866 -32.5527 9 10 0 0.00 0.00 - no Open
432 3.9640597332746412 -0.799965 -19.0924 7 14 0 0.00 0.00 - no Open
411 4.101860251337667 -1.10461 -32.7967 11 14 0 0.00 0.00 - no Open
393 4.338577277465298 -0.928563 -24.6787 6 19 0 0.00 0.00 - no Open
375 4.593979214038776 -0.9842 -26.6114 9 14 9 0.60 0.20 - no Current
360 4.946404916184476 -0.967244 -20.8301 10 17 0 0.00 0.00 - no Open
393 4.9811626547498475 -0.995794 -30.4779 16 16 0 0.00 0.00 - no Open
367 5.1394758644269976 -1.14157 -25.6203 16 23 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 -26.611kcal/mol
Ligand efficiency (LE) -0.9504kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -8.972
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 28HA

Physicochemical properties

Molecular weight 407.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.60
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 45.61kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 59.92kcal/mol
Minimised FF energy 14.30kcal/mol

SASA & burial

✓ computed
SASA (unbound) 642.8Ų
Total solvent-accessible surface area of free ligand
BSA total 467.4Ų
Buried surface area upon binding
BSA apolar 319.6Ų
Hydrophobic contacts buried
BSA polar 147.7Ų
Polar contacts buried
Fraction buried 72.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 68.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2423.6Ų
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 1377.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)