FAIRMol

OHD_Babesia_16

Pose ID 8851 Compound 1026 Pose 43

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 OHD_Babesia_16
PDB1NJJ

3D complex viewer

Strict H-bonds Permissive H-bonds
Viewer legend
Protein receptor
Pocket residues
Cofactor context
Docked ligand
Overall assessment
Reject SASA cached
Promising but geometrically suspicious
Binding strong Geometry low Native mixed SASA done
Strain ΔE
80.3 kcal/mol
Protein clashes
0
Internal clashes
23
Native overlap
contact recall 0.47, Jaccard 0.30, H-bond role recall 0.40
Burial
65%
Hydrophobic fit
81%
Reason: 23 internal clashes, strain 80.3 kcal/mol
strain ΔE 80.3 kcal/mol 23 intramolecular clashes 77% of hydrophobic surface is solvent-exposed (20/26 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 ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.707 kcal/mol/HA) ✓ Good fit quality (FQ -7.18) ✓ Strong H-bond network (9 bonds) ✓ Deep burial (65% SASA buried) ✓ Lipophilic contacts well-matched (81%) ✗ Extreme strain energy (80.3 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (23)
Score
-25.434
kcal/mol
LE
-0.707
kcal/mol/HA
Fit Quality
-7.18
FQ (Leeson)
HAC
36
heavy atoms
MW
499
Da
LogP
0.30
cLogP
Strain ΔE
80.3 kcal/mol
SASA buried
65%
Lipo contact
81% BSA apolar/total
SASA unbound
719 Ų
Apolar buried
379 Ų

Interaction summary

HB 9 HY 2 PI 0 CLASH 0 ⚠ Exposure 76%

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

No clash · clashes detected for this pose.
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
77% of hydrophobic surface is solvent-exposed (20/26 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 26 Buried (contacted) 6 Exposed 20 LogP 0.3 H-bonds 9
Exposed fragments: phenyl (4/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)phenyl (5/6 atoms exposed)aliphatic chain/group (3 atoms exposed)
Final rank5.184Score-25.434
Inter norm-0.682Intra norm-0.025
Top1000noExcludedno
Contacts15H-bonds9
Artifact reasongeometry warning; 23 clashes; 3 protein clashes; high strain Δ 80.3
Residues
ALA283 ARG22 ARG50 ASP385 ASP44 ASP47 CYS26 GLN341 GLU384 LEU25 LEU382 PHE284 SER282 THR21 THR285

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 overlap7Native recall0.47
Jaccard0.30RMSD-
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
36 3.754760107297694 -0.70587 -27.3156 6 19 0 0.00 0.00 - no Open
43 5.184386456076703 -0.681665 -25.4339 9 15 7 0.47 0.40 - no Current
23 5.87747965905087 -0.654866 -26.2231 4 14 0 0.00 0.00 - no Open
40 5.921196088162966 -0.755699 -26.9022 8 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 -25.434kcal/mol
Ligand efficiency (LE) -0.7065kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.181
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 36HA

Physicochemical properties

Molecular weight 498.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.30
Lipinski: ≤ 5
Rotatable bonds 8

Conformational strain (MMFF94s)

Strain energy (ΔE) 80.29kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 142.03kcal/mol
Minimised FF energy 61.74kcal/mol

SASA & burial

✓ computed
SASA (unbound) 719.4Ų
Total solvent-accessible surface area of free ligand
BSA total 470.2Ų
Buried surface area upon binding
BSA apolar 379.4Ų
Hydrophobic contacts buried
BSA polar 90.8Ų
Polar contacts buried
Fraction buried 65.4%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 80.7%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2517.6Ų
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 1388.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)