FAIRMol

Z31271200

Pose ID 9376 Compound 4255 Pose 568

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 Z31271200
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
42.0 kcal/mol
Protein clashes
4
Internal clashes
4
Native overlap
contact recall 0.53, Jaccard 0.44, H-bond role recall 0.20
Burial
72%
Hydrophobic fit
76%
Reason: strain 42.0 kcal/mol
strain ΔE 42.0 kcal/mol 4 protein-contact clashes 4 intramolecular clashes 100% of hydrophobic surface is solvent-exposed (19/19 atoms). Large non-polar area without protein contacts incurs a desolvation penalty and will reduce binding affinity. Consider truncating or replacing the exposed fragment.
EcoTox / ADMET In-silico prediction only
Fish LC₅₀
Not classified (>100 mg/L)
Daphnia EC₅₀
Not classified (>100 mg/L)
Algae IC₅₀
Not classified (>100 mg/L)
Bioaccum.
Not B (BCF≤2000)
Persistent
No
ADMET alerts (in-silico)
hERG Low Ames Clear DILI Low
Molecular report
Full metrics ↗
Reject Multiple quality flags — this pose should be deprioritised or discarded.
✓ Excellent LE (-0.624 kcal/mol/HA) ✓ Good fit quality (FQ -5.82) ✓ Strong H-bond network (6 bonds) ✓ Deep burial (72% SASA buried) ✓ Lipophilic contacts well-matched (76%) ✗ Extreme strain energy (42.0 kcal/mol) ✗ Geometry warnings ✗ Many internal clashes (17)
Score
-16.842
kcal/mol
LE
-0.624
kcal/mol/HA
Fit Quality
-5.82
FQ (Leeson)
HAC
27
heavy atoms
MW
363
Da
LogP
0.09
cLogP
Final rank
5.3421
rank score
Inter norm
-0.886
normalised
Contacts
11
H-bonds 7
Strain ΔE
42.0 kcal/mol
SASA buried
72%
Lipo contact
76% BSA apolar/total
SASA unbound
613 Ų
Apolar buried
338 Ų

Interaction summary

HBD 2 HBA 4 HY 0 PI 0 CLASH 4

HBD/HBA · H-bonds (geometric)

HBD = ligand donates H · HBA = ligand accepts H · ~ = weak (≥110°). Mode: strict. Residues: 4.

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

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
Jaccard0.44RMSD-
HB strict1Strict recall0.17
HB same residue+role1HB role recall0.20
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
568 5.342081703171574 -0.886349 -16.8416 7 11 8 0.53 0.20 - no Current

Molecular metrics

RDKit SASA burial, strain energy (MMFF94s), ligand efficiency and fit quality for this docking pose.
✓ Metrics available

Scoring & efficiency

Docking score -16.842kcal/mol
Ligand efficiency (LE) -0.6238kcal/mol/HA
Score / heavy atom count
Fit quality (FQ) -5.819
LE / (0.072 + 0.95/HAC) — Leeson & Springthorpe
Heavy atom count 27HA

Physicochemical properties

Molecular weight 363.4Da
Lipinski: ≤ 500 Da
LogP (cLogP) 0.09
Lipinski: ≤ 5
Rotatable bonds 6

Conformational strain (MMFF94s)

Strain energy (ΔE) 42.02kcal/mol
< 5 good · 5–10 marginal · > 10 problematic
Docked FF energy 183.63kcal/mol
Minimised FF energy 141.61kcal/mol

SASA & burial

✓ computed
SASA (unbound) 612.7Ų
Total solvent-accessible surface area of free ligand
BSA total 441.6Ų
Buried surface area upon binding
BSA apolar 338.0Ų
Hydrophobic contacts buried
BSA polar 103.6Ų
Polar contacts buried
Fraction buried 72.1%
> 60 % indicates good pocket engagement
Lipophilic contact ratio 76.5%
BSA apolar / BSA total — high = hydrophobic driver
Δ Non-polar SASA -2428.7Ų
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 1413.6Ų
Non-polar SASA of full complex (VdW proxy, nonpolar atoms only)