FAIRMol

OHD_TB2020_19

Pose ID 8862 Compound 2517 Pose 54

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_TB2020_19
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
63.3 kcal/mol
Protein clashes
3
Internal clashes
3
Native overlap
contact recall 0.53, Jaccard 0.36, H-bond role recall 0.40
Burial
78%
Hydrophobic fit
78%
Reason: strain 63.3 kcal/mol
strain ΔE 63.3 kcal/mol 3 protein-contact clashes 3 intramolecular clashes 90% of hydrophobic surface is solvent-exposed (18/20 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 ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.805 kcal/mol/HA) ✓ Good fit quality (FQ -7.69) ✓ Good H-bonds (5 bonds) ✓ Deep burial (78% SASA buried) ✓ Lipophilic contacts well-matched (78%) ✗ Extreme strain energy (63.3 kcal/mol) ✗ Geometry warnings ✗ Internal clashes (9)
Score
-23.349
kcal/mol
LE
-0.805
kcal/mol/HA
Fit Quality
-7.69
FQ (Leeson)
HAC
29
heavy atoms
MW
421
Da
LogP
2.01
cLogP
Final rank
3.3433
rank score
Inter norm
-0.879
normalised
Contacts
15
H-bonds 10
Strain ΔE
63.3 kcal/mol
SASA buried
78%
Lipo contact
78% BSA apolar/total
SASA unbound
731 Ų
Apolar buried
440 Ų

Interaction summary

HBD 1 HBA 4 HY 2 PI 0 CLASH 3

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 3.

PI · π–π interactions

No pi · π–π interactions detected for this pose.

HY · Hydrophobic contacts

CLASH · Clashes

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
Jaccard0.36RMSD-
HB strict1Strict recall0.17
HB same residue+role2HB role recall0.40
HB same residue3HB residue recall0.60

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
46 1.3061135800995796 -0.833631 -15.0981 5 17 0 0.00 0.00 - no Open
32 2.5267981267085653 -1.1057 -28.001 7 15 0 0.00 0.00 - no Open
39 2.984454236444561 -0.957658 -27.8854 10 17 0 0.00 0.00 - no Open
54 3.3433164112676046 -0.879147 -23.3489 10 15 8 0.53 0.40 - no Current
51 3.842845825095622 -0.729544 -17.075 6 14 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 -23.349kcal/mol
Ligand efficiency (LE) -0.8051kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -7.686
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 29HA

Physicochemical properties

Molecular weight 420.5Da
Lipinski: ≤ 500 Da
LogP (cLogP) 2.01
Lipinski: ≤ 5
Rotatable bonds 10

Conformational strain (MMFF94s)

Strain energy (ΔE) 63.30kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 77.70kcal/mol
Minimised FF energy 14.40kcal/mol

SASA & burial

✓ computed
SASA (unbound) 731.2Ų
Total solvent-accessible surface area of free ligand
BSA total 566.4Ų
Buried surface area upon binding
BSA apolar 439.7Ų
Hydrophobic contacts buried
BSA polar 126.8Ų
Polar contacts buried
Fraction buried 77.5%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 77.6%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2552.8Ų
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 1388.0Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)