FAIRMol

OHD_Babesia_29

Pose ID 8855 Compound 347 Pose 47

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_29
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
Likely artefact or unreliable pose
Binding strong Geometry medium Native mixed SASA done
Strain ΔE
29.7 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.33, Jaccard 0.25, H-bond role recall 0.40
Burial
68%
Hydrophobic fit
96%
Reason: no major geometry red flags detected
3 protein-contact clashes 3 intramolecular clashes 62% of hydrophobic surface is solvent-exposed (15/24 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 (-0.654 kcal/mol/HA) ✓ Good fit quality (FQ -6.25) ✓ Good H-bonds (4 bonds) ✓ Deep burial (68% SASA buried) ✓ Lipophilic contacts well-matched (96%) ✗ High strain energy (29.7 kcal/mol) ✗ Geometry warnings ✗ Protein-contact clashes (6) ✗ Many internal clashes (13)
Score
-18.982
kcal/mol
LE
-0.654
kcal/mol/HA
Fit Quality
-6.25
FQ (Leeson)
HAC
29
heavy atoms
MW
411
Da
LogP
5.08
cLogP
Strain ΔE
29.7 kcal/mol
SASA buried
68%
Lipo contact
96% BSA apolar/total
SASA unbound
709 Ų
Apolar buried
460 Ų

Interaction summary

HB 4 HY 8 PI 0 CLASH 3 ⚠ Exposure 62%
🚨Solvent-exposed hydrophobic surface — desolvation penalty likely
62% of hydrophobic surface is solvent-exposed (15/24 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 24 Buried (contacted) 9 Exposed 15 LogP 5.08 H-bonds 4
Exposed fragments: phenyl (6/6 atoms exposed)phenyl (6/6 atoms exposed)aliphatic chain/group (5 atoms exposed)
Final rank1.751Score-18.982
Inter norm-0.752Intra norm0.097
Top1000noExcludedno
Contacts10H-bonds4
Artifact reasongeometry warning; 13 clashes; 6 protein contact clashes; moderate strain Δ 29.7
Residues
ALA334 ARG337 ASP243 ASP385 GLU384 PHE383 SER282 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 overlap5Native recall0.33
Jaccard0.25RMSD-
HB strict2Strict recall0.33
HB same residue+role2HB role recall0.40
HB same residue2HB residue recall0.40

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
47 1.7513803404440405 -0.751813 -18.9817 4 10 5 0.33 0.40 - no Current
51 2.0933955506560604 -0.921006 -21.8559 4 18 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 -18.982kcal/mol
Ligand efficiency (LE) -0.6545kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -6.248
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 411.0Da
Lipinski: ≤ 500 Da
LogP (cLogP) 5.08
Lipinski: ≤ 5
Rotatable bonds 5

Conformational strain (MMFF94s)

Strain energy (ΔE) 29.70kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 63.53kcal/mol
Minimised FF energy 33.84kcal/mol

SASA & burial

✓ computed
SASA (unbound) 709.3Ų
Total solvent-accessible surface area of free ligand
BSA total 479.6Ų
Buried surface area upon binding
BSA apolar 459.9Ų
Hydrophobic contacts buried
BSA polar 19.7Ų
Polar contacts buried
Fraction buried 67.6%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 95.9%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2638.8Ų
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 1382.8Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)