FAIRMol

ulfkktlib_1412

Pose ID 9008 Compound 4150 Pose 200

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 ulfkktlib_1412
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 mixed SASA done
Strain ΔE
25.0 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.40, Jaccard 0.30, H-bond role recall 0.20
Burial
82%
Hydrophobic fit
75%
Reason: no major geometry red flags detected
4 protein-contact clashes 4 intramolecular clashes 100% of hydrophobic surface is solvent-exposed (5/5 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 (-1.606 kcal/mol/HA) ✓ Good fit quality (FQ -11.48) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (82% SASA buried) ✓ Lipophilic contacts well-matched (75%) ✗ High strain energy (25.0 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (6)
Score
-22.479
kcal/mol
LE
-1.606
kcal/mol/HA
Fit Quality
-11.48
FQ (Leeson)
HAC
14
heavy atoms
MW
253
Da
LogP
1.37
cLogP
Strain ΔE
25.0 kcal/mol
SASA buried
82%
Lipo contact
75% BSA apolar/total
SASA unbound
376 Ų
Apolar buried
234 Ų

Interaction summary

HB 8 HY 1 PI 0 CLASH 4 ⚠ Exposure 100%

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
100% of hydrophobic surface is solvent-exposed (5/5 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 5 Buried (contacted) 0 Exposed 5 LogP 1.37 H-bonds 8
Exposed fragments: aromatic ring (4/6 atoms exposed)aromatic ring (2/5 atoms exposed)
Final rank2.657Score-22.479
Inter norm-1.598Intra norm-0.007
Top1000noExcludedno
Contacts11H-bonds8
Artifact reasongeometry warning; 6 clashes; 2 protein clashes; moderate strain Δ 25.0
Residues
ARG337 ASP243 ASP385 GLU384 LEU339 MET386 PHE383 PRO338 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 overlap6Native recall0.40
Jaccard0.30RMSD-
HB strict0Strict recall0.00
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
200 2.6568283065524834 -1.59842 -22.4785 8 11 6 0.40 0.20 - no Current
224 3.2267526753453515 -1.61648 -22.5751 15 13 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 -22.479kcal/mol
Ligand efficiency (LE) -1.6056kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -11.480
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 14HA

Physicochemical properties

Molecular weight 253.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 1.37
Lipinski: ≤ 5
Rotatable bonds 2

Conformational strain (MMFF94s)

Strain energy (ΔE) 25.00kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 122.62kcal/mol
Minimised FF energy 97.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 376.3Ų
Total solvent-accessible surface area of free ligand
BSA total 309.7Ų
Buried surface area upon binding
BSA apolar 233.6Ų
Hydrophobic contacts buried
BSA polar 76.1Ų
Polar contacts buried
Fraction buried 82.3%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 75.4%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2216.2Ų
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 1427.1Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)