FAIRMol

OHD_TB2020_44

Pose ID 8863 Compound 2081 Pose 55

DB fairmolDocking 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 OHD_TB2020_44
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
39.6 kcal/mol
Protein clashes
2
Internal clashes
2
Native overlap
contact recall 0.60, Jaccard 0.39, H-bond role recall 0.40
Burial
69%
Hydrophobic fit
91%
Reason: no major geometry red flags detected
2 protein-contact clashes 48% of hydrophobic surface appears solvent-exposed (15/31 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Molecular report
Full metrics ↗
Weak Marginal quality. Consider only alongside better-scoring alternatives.
✓ Good LE (-0.374 kcal/mol/HA) ✓ Good fit quality (FQ -3.86) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (69% SASA buried) ✓ Lipophilic contacts well-matched (91%) ✗ Very high strain energy (39.6 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-14.212
kcal/mol
LE
-0.374
kcal/mol/HA
Fit Quality
-3.86
FQ (Leeson)
HAC
38
heavy atoms
MW
508
Da
LogP
2.47
cLogP
Strain ΔE
39.6 kcal/mol
SASA buried
69%
Lipo contact
91% BSA apolar/total
SASA unbound
877 Ų
Apolar buried
555 Ų

Interaction summary

HB 6 HY 12 PI 0 CLASH 2 ⚠ Exposure 48%

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

⚠️Partial hydrophobic solvent exposure
48% of hydrophobic surface appears solvent-exposed (15/31 atoms). Partial exposure is common but may limit selectivity and membrane permeability.
Non-polar atoms 31 Buried (contacted) 16 Exposed 15 LogP 2.47 H-bonds 6
Exposed fragments: phenyl (3/5 atoms exposed)phenyl (4/5 atoms exposed)phenyl (4/6 atoms exposed)aliphatic chain/group (6 atoms exposed)
Final rank3.336Score-14.212
Inter norm-0.586Intra norm0.208
Top1000noExcludedno
Contacts17H-bonds6
Artifact reasongeometry warning; 17 clashes; 1 protein clash; high strain Δ 39.6
Residues
ALA283 ARG22 ARG337 ASP385 ASP44 CYS26 GLN341 GLU343 GLU384 LEU25 LEU339 LEU382 PHE284 SER282 THR21 THR285 VAL42

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
Jaccard0.39RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
55 1.1309237672521895 -0.946794 -33.107 12 19 0 0.00 0.00 - no Open
38 1.6874363656426687 -0.757076 -26.2584 4 13 0 0.00 0.00 - no Open
45 1.7705913919027843 -0.7294 -25.5678 2 19 0 0.00 0.00 - no Open
42 2.4406726172543074 -0.85533 -28.6024 3 15 0 0.00 0.00 - no Open
37 3.018866426350658 -0.702682 -22.4896 2 17 0 0.00 0.00 - no Open
55 3.3356888117292276 -0.585751 -14.2121 6 17 9 0.60 0.40 - no Current
41 3.7801042212216704 -0.707759 -21.7123 9 13 0 0.00 0.00 - no Open
56 4.128074887285989 -0.563627 -17.0404 6 12 0 0.00 0.00 - no Open
24 4.331773379453936 -0.787254 -25.522 7 20 0 0.00 0.00 - no Open
25 4.946037833206474 -0.822365 -28.2458 9 22 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 -14.212kcal/mol
Ligand efficiency (LE) -0.3740kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -3.856
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 38HA

Physicochemical properties

Molecular weight 507.6Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.47
Lipinski: ≤ 5
Rotatable bonds 9

Conformational strain (MMFF94s)

Strain energy (ΔE) 39.63kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 118.93kcal/mol
Minimised FF energy 79.30kcal/mol

SASA & burial

✓ computed
SASA (unbound) 876.7Ų
Total solvent-accessible surface area of free ligand
BSA total 608.2Ų
Buried surface area upon binding
BSA apolar 554.7Ų
Hydrophobic contacts buried
BSA polar 53.5Ų
Polar contacts buried
Fraction buried 69.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 91.2%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2736.4Ų
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 1432.4Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)