FAIRMol

Z20255081

Pose ID 9234 Compound 678 Pose 426

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 Z20255081
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
36.2 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.40, Jaccard 0.26, H-bond role recall 0.20
Burial
69%
Hydrophobic fit
67%
Reason: no major geometry red flags detected
2 protein-contact clashes 60% of hydrophobic surface is solvent-exposed (12/20 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 (-0.609 kcal/mol/HA) ✓ Good fit quality (FQ -5.88) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (67%) ✗ Very high strain energy (36.2 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (10)
Score
-18.275
kcal/mol
LE
-0.609
kcal/mol/HA
Fit Quality
-5.88
FQ (Leeson)
HAC
30
heavy atoms
MW
459
Da
LogP
4.59
cLogP
Strain ΔE
36.2 kcal/mol
SASA buried
69%
Lipo contact
67% BSA apolar/total
SASA unbound
699 Ų
Apolar buried
322 Ų

Interaction summary

HB 8 HY 6 PI 0 CLASH 2 ⚠ Exposure 60%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
60% of hydrophobic surface is solvent-exposed (12/20 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 20 Buried (contacted) 8 Exposed 12 LogP 4.59 H-bonds 8
Exposed fragments: phenyl (2/5 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (4 atoms exposed)
Final rank3.391Score-18.275
Inter norm-0.781Intra norm0.172
Top1000noExcludedno
Contacts14H-bonds8
Artifact reasongeometry warning; 10 clashes; 2 protein clashes; high strain Δ 36.1
Residues
ALA283 ARG337 ASP243 ASP385 GLU384 LEU339 MET386 PHE284 PHE383 SER282 THR21 THR285 VAL335 VAL336

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 overlap6Native recall0.40
Jaccard0.26RMSD-
HB strict0Strict recall0.00
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

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
396 -0.11056417959593262 -1.19533 -34.8331 9 17 0 0.00 0.00 - no Open
419 0.3271797508948459 -0.839972 -24.243 2 13 0 0.00 0.00 - no Open
480 0.4575261200251558 -0.989236 -25.5218 1 21 0 0.00 0.00 - no Open
388 1.3247621968802203 -0.97422 -27.5305 8 15 0 0.00 0.00 - no Open
429 1.5682838105176942 -0.894601 -23.8867 4 14 0 0.00 0.00 - no Open
452 1.7973468440035216 -0.986403 -22.7906 5 13 0 0.00 0.00 - no Open
450 1.8532223899879046 -0.707052 -19.9579 8 16 0 0.00 0.00 - no Open
442 2.056146307025179 -0.886151 -21.9132 8 18 0 0.00 0.00 - no Open
402 2.1313085350777627 -1.15443 -29.8157 14 17 0 0.00 0.00 - no Open
432 2.4339812204281435 -0.65996 -17.4537 6 10 0 0.00 0.00 - no Open
469 2.992470262134781 -0.896028 -22.0828 6 18 0 0.00 0.00 - no Open
408 3.228580280103112 -0.944403 -24.0255 6 19 0 0.00 0.00 - no Open
426 3.390641675980678 -0.781192 -18.2749 8 14 6 0.40 0.20 - no Current
398 3.736159295282282 -0.857475 -20.4087 13 15 0 0.00 0.00 - no Open
409 3.9602894299335802 -0.833689 -21.2615 10 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 -18.275kcal/mol
Ligand efficiency (LE) -0.6092kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.876
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 30HA

Physicochemical properties

Molecular weight 458.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.59
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 36.18kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 53.40kcal/mol
Minimised FF energy 17.22kcal/mol

SASA & burial

✓ computed
SASA (unbound) 698.9Ų
Total solvent-accessible surface area of free ligand
BSA total 480.4Ų
Buried surface area upon binding
BSA apolar 321.6Ų
Hydrophobic contacts buried
BSA polar 158.8Ų
Polar contacts buried
Fraction buried 68.7%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 66.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2442.1Ų
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 1391.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)