FAIRMol

Z56784540

Pose ID 9387 Compound 3011 Pose 579

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 Z56784540
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
Weak or marginal quality
Binding strong Geometry medium Native strong SASA done
Strain ΔE
37.6 kcal/mol
Protein clashes
1
Internal clashes
1
Native overlap
contact recall 0.60, Jaccard 0.53, H-bond role recall 0.40
Burial
67%
Hydrophobic fit
85%
Reason: no major geometry red flags detected
1 protein-contact clashes 85% of hydrophobic surface is solvent-exposed (23/27 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 (-0.687 kcal/mol/HA) ✓ Good fit quality (FQ -6.88) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (67% SASA buried) ✓ Lipophilic contacts well-matched (85%) ✗ Very high strain energy (37.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (14)
Score
-23.360
kcal/mol
LE
-0.687
kcal/mol/HA
Fit Quality
-6.88
FQ (Leeson)
HAC
34
heavy atoms
MW
467
Da
LogP
4.87
cLogP
Strain ΔE
37.6 kcal/mol
SASA buried
67%
Lipo contact
85% BSA apolar/total
SASA unbound
703 Ų
Apolar buried
400 Ų

Interaction summary

HB 6 HY 1 PI 0 CLASH 1 ⚠ Exposure 85%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
85% of hydrophobic surface is solvent-exposed (23/27 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 27 Buried (contacted) 4 Exposed 23 LogP 4.87 H-bonds 6
Exposed fragments: phenyl (4/5 atoms exposed)phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (5 atoms exposed)
Final rank2.680Score-23.360
Inter norm-0.645Intra norm-0.042
Top1000noExcludedno
Contacts11H-bonds6
Artifact reasongeometry warning; 14 clashes; 1 protein clash; high strain Δ 37.5
Residues
ARG22 ARG242 ARG337 ASP243 ASP385 GLU384 LEU339 SER282 THR21 THR241 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
Jaccard0.53RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
576 0.6352292789363421 -0.986887 -31.8198 2 13 0 0.00 0.00 - no Open
593 2.139321928797725 -0.590921 -17.8316 6 11 0 0.00 0.00 - no Open
579 2.680199327253876 -0.644737 -23.3603 6 11 9 0.60 0.40 - no Current
584 3.932188150368959 -0.99912 -33.0857 8 20 0 0.00 0.00 - no Open
591 4.5623805146338885 -0.885953 -28.347 16 15 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 -23.360kcal/mol
Ligand efficiency (LE) -0.6871kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.875
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 466.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.87
Lipinski: ≤ 5
Rotatable bonds 7

Conformational strain (MMFF94s)

Strain energy (ΔE) 37.60kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 120.06kcal/mol
Minimised FF energy 82.46kcal/mol

SASA & burial

✓ computed
SASA (unbound) 703.2Ų
Total solvent-accessible surface area of free ligand
BSA total 471.3Ų
Buried surface area upon binding
BSA apolar 400.5Ų
Hydrophobic contacts buried
BSA polar 70.8Ų
Polar contacts buried
Fraction buried 67.0%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 85.0%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2504.9Ų
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 1434.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)