FAIRMol

Z19138088

Pose ID 9187 Compound 651 Pose 379

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 Z19138088
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 high Native mixed SASA done
Strain ΔE
26.7 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.53, Jaccard 0.33, H-bond role recall 0.20
Burial
74%
Hydrophobic fit
70%
Reason: no major geometry red flags detected
2 protein-contact clashes 100% of hydrophobic surface is solvent-exposed (25/25 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 (-0.704 kcal/mol/HA) ✓ Good fit quality (FQ -7.04) ✓ Strong H-bond network (8 bonds) ✓ Deep burial (74% SASA buried) ✓ Lipophilic contacts well-matched (70%) ✗ High strain energy (26.7 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (19)
Score
-23.920
kcal/mol
LE
-0.704
kcal/mol/HA
Fit Quality
-7.04
FQ (Leeson)
HAC
34
heavy atoms
MW
474
Da
LogP
4.20
cLogP
Strain ΔE
26.7 kcal/mol
SASA buried
74%
Lipo contact
70% BSA apolar/total
SASA unbound
740 Ų
Apolar buried
385 Ų

Interaction summary

HB 8 HY 0 PI 0 CLASH 2 ⚠ Exposure 100%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
100% of hydrophobic surface is solvent-exposed (25/25 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 25 Buried (contacted) 0 Exposed 25 LogP 4.2 H-bonds 8
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (4/6 atoms exposed)phenyl (5/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (2 atoms exposed)
Final rank3.219Score-23.920
Inter norm-0.712Intra norm0.009
Top1000noExcludedno
Contacts17H-bonds8
Artifact reasongeometry warning; 19 clashes; 1 protein clash; moderate strain Δ 26.7
Residues
ALA283 ARG22 ARG242 ARG337 ARG50 ASN20 ASP243 ASP385 ASP44 ASP47 GLU384 GLY240 LYS51 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 overlap8Native recall0.53
Jaccard0.33RMSD-
HB strict1Strict recall0.17
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

No hy · hydrophobic contacts detected for this pose.

CLASH · Clashes

All stored poses for this docking hit

PoseFinal rankInter normScoreHBCTCT overlapCT recallHB role rec.RMSDExcluded
435 1.9301717756467363 -0.72761 -23.752 6 16 0 0.00 0.00 - no Open
334 2.0263869649204853 -0.930222 -27.1777 3 21 0 0.00 0.00 - no Open
395 2.0501377984473983 -0.787007 -19.7508 5 14 0 0.00 0.00 - no Open
397 2.752858282721569 -0.800489 -23.9414 10 17 0 0.00 0.00 - no Open
396 2.7601535713818413 -0.591573 -16.9942 5 14 0 0.00 0.00 - no Open
381 2.9359635508409108 -0.793642 -19.3973 6 14 0 0.00 0.00 - no Open
450 3.1523302745872246 -0.760382 -22.134 3 18 0 0.00 0.00 - no Open
379 3.2188609293194674 -0.712407 -23.9203 8 17 8 0.53 0.20 - no Current
418 3.4321465037133247 -0.816749 -26.4904 4 18 0 0.00 0.00 - no Open
407 3.5524489581677203 -0.633858 -18.4382 7 15 0 0.00 0.00 - no Open
370 3.7807067079968997 -0.979467 -27.5375 10 15 0 0.00 0.00 - no Open
493 3.8486675627744926 -0.726729 -19.7364 7 15 0 0.00 0.00 - no Open
366 4.10912935177256 -0.834923 -27.5266 11 20 0 0.00 0.00 - no Open
336 4.160825631036783 -0.993151 -30.1156 5 15 0 0.00 0.00 - no Open
464 5.0362869852581325 -0.819442 -25.2435 6 21 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 -23.920kcal/mol
Ligand efficiency (LE) -0.7035kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.040
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 34HA

Physicochemical properties

Molecular weight 474.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 4.20
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 26.74kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 83.76kcal/mol
Minimised FF energy 57.02kcal/mol

SASA & burial

✓ computed
SASA (unbound) 740.4Ų
Total solvent-accessible surface area of free ligand
BSA total 551.7Ų
Buried surface area upon binding
BSA apolar 385.4Ų
Hydrophobic contacts buried
BSA polar 166.4Ų
Polar contacts buried
Fraction buried 74.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 69.8%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2475.5Ų
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 1425.7Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)